64297632 has 96 divisors (see below), whose sum is σ = 194406912. Its totient is φ = 18226944.

The previous prime is 64297631. The next prime is 64297643. The reversal of 64297632 is 23679246.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (64297631) 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, 109243 + ... + 109829.

It is an arithmetic number, because the mean of its divisors is an integer number (2025072).

Almost surely, 2^64297632 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 64297632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97203456).

64297632 is an abundant number, since it is smaller than the sum of its proper divisors (130109280).

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

64297632 is a wasteful number, since it uses less digits than its factorization.

64297632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770 (or 762 counting only the distinct ones).

The product of its digits is 108864, while the sum is 39.

The square root of 64297632 is about 8018.5804229926. The cubic root of 64297632 is about 400.6191079357.

The spelling of 64297632 in words is "sixty-four million, two hundred ninety-seven thousand, six hundred thirty-two".