78730965 has 24 divisors (see below), whose sum is σ = 143651040. Its totient is φ = 39779424.

The previous prime is 78730937. The next prime is 78730991. The reversal of 78730965 is 56903787.

It is a happy number.

It is not a de Polignac number, because 78730965 - 2¹³ = 78722773 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 78730965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45187 + ... + 46896.

It is an arithmetic number, because the mean of its divisors is an integer number (5985460).

Almost surely, 2^78730965 is an apocalyptic number.

It is an amenable number.

78730965 is a deficient number, since it is larger than the sum of its proper divisors (64920075).

78730965 is a wasteful number, since it uses less digits than its factorization.

78730965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92113 (or 92110 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 78730965 is about 8873.0471090827. The cubic root of 78730965 is about 428.5964059252.

The spelling of 78730965 in words is "seventy-eight million, seven hundred thirty thousand, nine hundred sixty-five".