79220636 has 18 divisors (see below), whose sum is σ = 152386080. Its totient is φ = 36009160.

The previous prime is 79220627. The next prime is 79220641. The reversal of 79220636 is 63602297.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 79220596 and 79220605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 81356 + ... + 82323.

Almost surely, 2^79220636 is an apocalyptic number.

It is an amenable number.

79220636 is a deficient number, since it is larger than the sum of its proper divisors (73165444).

79220636 is a wasteful number, since it uses less digits than its factorization.

79220636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163705 (or 163692 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 79220636 is about 8900.5975080328. The cubic root of 79220636 is about 429.4831287308.

The spelling of 79220636 in words is "seventy-nine million, two hundred twenty thousand, six hundred thirty-six".