78630464 has 56 divisors (see below), whose sum is σ = 173102016. Its totient is φ = 35136000.

The previous prime is 78630449. The next prime is 78630479. The reversal of 78630464 is 46403687.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78630449) and next prime (78630479).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42029 + ... + 43859.

Almost surely, 2^78630464 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 78630464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86551008).

78630464 is an abundant number, since it is smaller than the sum of its proper divisors (94471552).

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

78630464 is a wasteful number, since it uses less digits than its factorization.

78630464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915 (or 1905 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 38.

The square root of 78630464 is about 8867.3820262804. The cubic root of 78630464 is about 428.4139588253.

The spelling of 78630464 in words is "seventy-eight million, six hundred thirty thousand, four hundred sixty-four".