78951213 has 64 divisors (see below), whose sum is σ = 142387200. Its totient is φ = 42612480.

The previous prime is 78951193. The next prime is 78951217. The reversal of 78951213 is 31215987.

It is not a de Polignac number, because 78951213 - 2⁶ = 78951149 is a prime.

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 a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78951217) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 95520 + ... + 96342.

It is an arithmetic number, because the mean of its divisors is an integer number (2224800).

Almost surely, 2^78951213 is an apocalyptic number.

It is an amenable number.

78951213 is a deficient number, since it is larger than the sum of its proper divisors (63435987).

78951213 is a wasteful number, since it uses less digits than its factorization.

78951213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879 (or 873 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 78951213 is about 8885.4495102949. The cubic root of 78951213 is about 428.9956965679.

The spelling of 78951213 in words is "seventy-eight million, nine hundred fifty-one thousand, two hundred thirteen".