78617465 has 16 divisors (see below), whose sum is σ = 96173760. Its totient is φ = 61680960.

The previous prime is 78617453. The next prime is 78617477. The reversal of 78617465 is 56471687.

It is an interprime number because it is at equal distance from previous prime (78617453) and next prime (78617477).

It is not a de Polignac number, because 78617465 - 2¹⁶ = 78551929 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110531 + ... + 111239.

It is an arithmetic number, because the mean of its divisors is an integer number (6010860).

Almost surely, 2^78617465 is an apocalyptic number.

It is an amenable number.

78617465 is a deficient number, since it is larger than the sum of its proper divisors (17556295).

78617465 is a wasteful number, since it uses less digits than its factorization.

78617465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112.

The product of its digits is 282240, while the sum is 44.

The square root of 78617465 is about 8866.6490288045. The cubic root of 78617465 is about 428.3903494010.

The spelling of 78617465 in words is "seventy-eight million, six hundred seventeen thousand, four hundred sixty-five".