78964770 has 64 divisors (see below), whose sum is σ = 198785664. Its totient is φ = 20052480.

The previous prime is 78964763. The next prime is 78964777. The reversal of 78964770 is 7746987.

It is an interprime number because it is at equal distance from previous prime (78964763) and next prime (78964777).

It is not an unprimeable number, because it can be changed into a prime (78964777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52144 + ... + 53636.

It is an arithmetic number, because the mean of its divisors is an integer number (3106026).

Almost surely, 2^78964770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78964770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99392832).

78964770 is an abundant number, since it is smaller than the sum of its proper divisors (119820894).

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

78964770 is a wasteful number, since it uses less digits than its factorization.

78964770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587.

The product of its (nonzero) digits is 592704, while the sum is 48.

The square root of 78964770 is about 8886.2123539785. The cubic root of 78964770 is about 429.0202499665.

The spelling of 78964770 in words is "seventy-eight million, nine hundred sixty-four thousand, seven hundred seventy".