76643064 has 32 divisors (see below), whose sum is σ = 212898000. Its totient is φ = 25547616.

The previous prime is 76643057. The next prime is 76643111. The reversal of 76643064 is 46034667.

76643064 is a `hidden beast` number, since 7 + 6 + 643 + 0 + 6 + 4 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177199 + ... + 177630.

Almost surely, 2^76643064 is an apocalyptic number.

It is an amenable number.

76643064 is an abundant number, since it is smaller than the sum of its proper divisors (136254936).

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

76643064 is a wasteful number, since it uses less digits than its factorization.

76643064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354844 (or 354834 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 76643064 is about 8754.6024467134. The cubic root of 76643064 is about 424.7737000539.

The spelling of 76643064 in words is "seventy-six million, six hundred forty-three thousand, sixty-four".