79870016 has 14 divisors (see below), whose sum is σ = 158492190. Its totient is φ = 39934976.

The previous prime is 79870003. The next prime is 79870019. The reversal of 79870016 is 61007897.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 47334400 + 32535616 = 6880^2 + 5704^2 .

It is not an unprimeable number, because it can be changed into a prime (79870019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623921 + ... + 624048.

Almost surely, 2^79870016 is an apocalyptic number.

It is an amenable number.

79870016 is a deficient number, since it is larger than the sum of its proper divisors (78622174).

79870016 is a wasteful number, since it uses less digits than its factorization.

79870016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247981 (or 1247971 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 79870016 is about 8937.0026295173. The cubic root of 79870016 is about 430.6534431342.

The spelling of 79870016 in words is "seventy-nine million, eight hundred seventy thousand, sixteen".