79684425 has 24 divisors (see below), whose sum is σ = 146384480. Its totient is φ = 42498000.

The previous prime is 79684417. The next prime is 79684427. The reversal of 79684425 is 52448697.

It is a happy number.

It is not a de Polignac number, because 79684425 - 2³ = 79684417 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79684427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58351 + ... + 59700.

Almost surely, 2^79684425 is an apocalyptic number.

79684425 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

79684425 is a deficient number, since it is larger than the sum of its proper divisors (66700055).

79684425 is a wasteful number, since it uses less digits than its factorization.

79684425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118070 (or 118059 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 79684425 is about 8926.6132995666. The cubic root of 79684425 is about 430.3196199476.

The spelling of 79684425 in words is "seventy-nine million, six hundred eighty-four thousand, four hundred twenty-five".