65776032 has 216 divisors, whose sum is σ = 224078400. Its totient is φ = 18240768.

The previous prime is 65776027. The next prime is 65776049. The reversal of 65776032 is 23067756.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 832569 + ... + 832647.

It is an arithmetic number, because the mean of its divisors is an integer number (1037400).

Almost surely, 2^65776032 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 65776032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112039200).

65776032 is an abundant number, since it is smaller than the sum of its proper divisors (158302368).

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

65776032 is a wasteful number, since it uses less digits than its factorization.

65776032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 36.

The square root of 65776032 is about 8110.2424131465. The cubic root of 65776032 is about 403.6663585298. Note that the first 3 decimals are identical.

The spelling of 65776032 in words is "sixty-five million, seven hundred seventy-six thousand, thirty-two".