79061690 has 16 divisors (see below), whose sum is σ = 144997128. Its totient is φ = 31027776.

The previous prime is 79061669. The next prime is 79061753. The reversal of 79061690 is 9616097.

It can be written as a sum of positive squares in 4 ways, for example, as 78198649 + 863041 = 8843^2 + 929^2 .

It is a super-2 number, since 2×79061690² = 12501501651312200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74057 + ... + 75116.

Almost surely, 2^79061690 is an apocalyptic number.

79061690 is a deficient number, since it is larger than the sum of its proper divisors (65935438).

79061690 is a wasteful number, since it uses less digits than its factorization.

79061690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149233.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 79061690 is about 8891.6640737266. The cubic root of 79061690 is about 429.1957022280.

The spelling of 79061690 in words is "seventy-nine million, sixty-one thousand, six hundred ninety".