78450651 has 12 divisors (see below), whose sum is σ = 113521512. Its totient is φ = 52206336.

The previous prime is 78450629. The next prime is 78450667. The reversal of 78450651 is 15605487.

It is not a de Polignac number, because 78450651 - 2⁶ = 78450587 is a prime.

It is a super-3 number, since 3×78450651³ (a number of 25 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (78450451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2361 + ... + 12746.

It is an arithmetic number, because the mean of its divisors is an integer number (9460126).

Almost surely, 2^78450651 is an apocalyptic number.

78450651 is a deficient number, since it is larger than the sum of its proper divisors (35070861).

78450651 is a wasteful number, since it uses less digits than its factorization.

78450651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15690 (or 15687 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 78450651 is about 8857.2372103269. The cubic root of 78450651 is about 428.0871423431.

The spelling of 78450651 in words is "seventy-eight million, four hundred fifty thousand, six hundred fifty-one".