79663828 has 6 divisors (see below), whose sum is σ = 139411706. Its totient is φ = 39831912.

The previous prime is 79663817. The next prime is 79663847. The reversal of 79663828 is 82836697.

It can be written as a sum of positive squares in only one way, i.e., 79352464 + 311364 = 8908^2 + 558^2 .

It is a super-2 number, since 2×79663828² = 12692650983227168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9957975 + ... + 9957982.

Almost surely, 2^79663828 is an apocalyptic number.

It is an amenable number.

79663828 is a deficient number, since it is larger than the sum of its proper divisors (59747878).

79663828 is a wasteful number, since it uses less digits than its factorization.

79663828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19915961 (or 19915959 counting only the distinct ones).

The product of its digits is 870912, while the sum is 49.

The square root of 79663828 is about 8925.4595399901. The cubic root of 79663828 is about 430.2825401084.

The spelling of 79663828 in words is "seventy-nine million, six hundred sixty-three thousand, eight hundred twenty-eight".