78758064 has 120 divisors (see below), whose sum is σ = 274839552. Its totient is φ = 20453760.

The previous prime is 78758063. The next prime is 78758081. The reversal of 78758064 is 46085787.

78758064 is a `hidden beast` number, since 7 + 8 + 7 + 580 + 64 = 666.

It is not an unprimeable number, because it can be changed into a prime (78758063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7537 + ... + 14639.

Almost surely, 2^78758064 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 78758064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137419776).

78758064 is an abundant number, since it is smaller than the sum of its proper divisors (196081488).

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

78758064 is a wasteful number, since it uses less digits than its factorization.

78758064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7135 (or 7126 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 78758064 is about 8874.5740179459. The cubic root of 78758064 is about 428.6455742192.

The spelling of 78758064 in words is "seventy-eight million, seven hundred fifty-eight thousand, sixty-four".