76445688 has 128 divisors (see below), whose sum is σ = 218557440. Its totient is φ = 22080000.

The previous prime is 76445687. The next prime is 76445729. The reversal of 76445688 is 88654467.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76445687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 756838 + ... + 756938.

It is an arithmetic number, because the mean of its divisors is an integer number (1707480).

Almost surely, 2^76445688 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 76445688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109278720).

76445688 is an abundant number, since it is smaller than the sum of its proper divisors (142111752).

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

76445688 is a wasteful number, since it uses less digits than its factorization.

76445688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 225 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 48.

The square root of 76445688 is about 8743.3224806134. The cubic root of 76445688 is about 424.4087520177.

The spelling of 76445688 in words is "seventy-six million, four hundred forty-five thousand, six hundred eighty-eight".