78064998 has 32 divisors (see below), whose sum is σ = 170640000. Its totient is φ = 23612160.

The previous prime is 78064963. The next prime is 78065011. The reversal of 78064998 is 89946087.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 78064998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61878 + ... + 63126.

It is an arithmetic number, because the mean of its divisors is an integer number (5332500).

Almost surely, 2^78064998 is an apocalyptic number.

78064998 is an abundant number, since it is smaller than the sum of its proper divisors (92575002).

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

78064998 is a wasteful number, since it uses less digits than its factorization.

78064998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 78064998 is about 8835.4398871816. The cubic root of 78064998 is about 427.3845165306.

The spelling of 78064998 in words is "seventy-eight million, sixty-four thousand, nine hundred ninety-eight".