634261650 has 96 divisors (see below), whose sum is σ = 1723550400. Its totient is φ = 153081600.

The previous prime is 634261633. The next prime is 634261651. The reversal of 634261650 is 56162436.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (634261651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 443136 + ... + 444564.

It is an arithmetic number, because the mean of its divisors is an integer number (17953650).

Almost surely, 2^634261650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634261650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (861775200).

634261650 is an abundant number, since it is smaller than the sum of its proper divisors (1089288750).

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

634261650 is a wasteful number, since it uses less digits than its factorization.

634261650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724 (or 1719 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 634261650 is about 25184.5518125695. The cubic root of 634261650 is about 859.1905354379.

It can be divided in two parts, 63426 and 1650, that multiplied together give a square (104652900 = 10230²).

The spelling of 634261650 in words is "six hundred thirty-four million, two hundred sixty-one thousand, six hundred fifty".