78770275 has 12 divisors (see below), whose sum is σ = 98108800. Its totient is φ = 62736480.

The previous prime is 78770269. The next prime is 78770317. The reversal of 78770275 is 57207787.

It is not a de Polignac number, because 78770275 - 2¹⁷ = 78639203 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

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 11 ways as a sum of consecutive naturals, for example, 1155 + ... + 12604.

Almost surely, 2^78770275 is an apocalyptic number.

78770275 is a deficient number, since it is larger than the sum of its proper divisors (19338525).

78770275 is a wasteful number, since it uses less digits than its factorization.

78770275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13998 (or 13993 counting only the distinct ones).

The product of its (nonzero) digits is 192080, while the sum is 43.

The square root of 78770275 is about 8875.2619679647. The cubic root of 78770275 is about 428.6677261122.

The spelling of 78770275 in words is "seventy-eight million, seven hundred seventy thousand, two hundred seventy-five".