78000564 has 24 divisors (see below), whose sum is σ = 182949760. Its totient is φ = 25864704.

The previous prime is 78000563. The next prime is 78000569. The reversal of 78000564 is 46500087.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78000563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14524 + ... + 19155.

Almost surely, 2^78000564 is an apocalyptic number.

It is an amenable number.

78000564 is an abundant number, since it is smaller than the sum of its proper divisors (104949196).

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

78000564 is a wasteful number, since it uses less digits than its factorization.

78000564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33879 (or 33877 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 78000564 is about 8831.7927964825. The cubic root of 78000564 is about 427.2668979876.

The spelling of 78000564 in words is "seventy-eight million, five hundred sixty-four", and thus it is an aban number.