65632064 has 28 divisors (see below), whose sum is σ = 135904224. Its totient is φ = 31388544.

The previous prime is 65632051. The next prime is 65632067. The reversal of 65632064 is 46023656.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 65632064.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65632067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20822 + ... + 23765.

Almost surely, 2^65632064 is an apocalyptic number.

65632064 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

65632064 is an abundant number, since it is smaller than the sum of its proper divisors (70272160).

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

65632064 is a wasteful number, since it uses less digits than its factorization.

65632064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44622 (or 44612 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 65632064 is about 8101.3618608232. The cubic root of 65632064 is about 403.3716336979.

The spelling of 65632064 in words is "sixty-five million, six hundred thirty-two thousand, sixty-four".