64688232 has 96 divisors (see below), whose sum is σ = 191164320. Its totient is φ = 18184320.

The previous prime is 64688231. The next prime is 64688257. The reversal of 64688232 is 23288646.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (64688231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78382 + ... + 79202.

It is an arithmetic number, because the mean of its divisors is an integer number (1991295).

Almost surely, 2^64688232 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 64688232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95582160).

64688232 is an abundant number, since it is smaller than the sum of its proper divisors (126476088).

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

64688232 is a wasteful number, since it uses less digits than its factorization.

64688232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911 (or 900 counting only the distinct ones).

The product of its digits is 110592, while the sum is 39.

The square root of 64688232 is about 8042.8994771786. The cubic root of 64688232 is about 401.4287075777.

The spelling of 64688232 in words is "sixty-four million, six hundred eighty-eight thousand, two hundred thirty-two".