64157632 has 112 divisors (see below), whose sum is σ = 162690048. Its totient is φ = 24376320.

The previous prime is 64157617. The next prime is 64157633. The reversal of 64157632 is 23675146.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64157633) 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, 231478 + ... + 231754.

Almost surely, 2^64157632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64157632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81345024).

64157632 is an abundant number, since it is smaller than the sum of its proper divisors (98532416).

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

64157632 is a wasteful number, since it uses less digits than its factorization.

64157632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354 (or 344 counting only the distinct ones).

The product of its digits is 30240, while the sum is 34.

The square root of 64157632 is about 8009.8459410903. The cubic root of 64157632 is about 400.3281307519.

The spelling of 64157632 in words is "sixty-four million, one hundred fifty-seven thousand, six hundred thirty-two".