642623160 has 64 divisors (see below), whose sum is σ = 1941991200. Its totient is φ = 170110976.

The previous prime is 642623159. The next prime is 642623167. The reversal of 642623160 is 61326246.

642623160 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642623167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3105 + ... + 35984.

Almost surely, 2^642623160 is an apocalyptic number.

642623160 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 642623160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (970995600).

642623160 is an abundant number, since it is smaller than the sum of its proper divisors (1299368040).

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

642623160 is a wasteful number, since it uses less digits than its factorization.

642623160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39240 (or 39236 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 642623160 is about 25350.0130177481. The cubic root of 642623160 is about 862.9496516983.

The spelling of 642623160 in words is "six hundred forty-two million, six hundred twenty-three thousand, one hundred sixty".