634462920 has 384 divisors, whose sum is σ = 2575722240. Its totient is φ = 131880960.

The previous prime is 634462919. The next prime is 634462921. The reversal of 634462920 is 29264436.

634462920 is a `hidden beast` number, since 6 + 3 + 4 + 4 + 629 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (634462919) and next prime (634462921).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (634462921) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3505230 + ... + 3505410.

It is an arithmetic number, because the mean of its divisors is an integer number (6707610).

Almost surely, 2^634462920 is an apocalyptic number.

634462920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634462920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1287861120).

634462920 is an abundant number, since it is smaller than the sum of its proper divisors (1941259320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634462920 is a wasteful number, since it uses less digits than its factorization.

634462920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 318 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 634462920 is about 25188.5473975773. The cubic root of 634462920 is about 859.2814080246.

It can be divided in two parts, 63446 and 2920, that added together give a palindrome (66366).

The spelling of 634462920 in words is "six hundred thirty-four million, four hundred sixty-two thousand, nine hundred twenty".