79701691 has 2 divisors, whose sum is σ = 79701692. Its totient is φ = 79701690.

The previous prime is 79701679. The next prime is 79701701. The reversal of 79701691 is 19610797.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79701691 - 2¹³ = 79693499 is a prime.

It is not a weakly prime, because it can be changed into another prime (79701631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39850845 + 39850846.

It is an arithmetic number, because the mean of its divisors is an integer number (39850846).

Almost surely, 2^79701691 is an apocalyptic number.

79701691 is a deficient number, since it is larger than the sum of its proper divisors (1).

79701691 is an equidigital number, since it uses as much as digits as its factorization.

79701691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23814, while the sum is 40.

The square root of 79701691 is about 8927.5803552810. The cubic root of 79701691 is about 430.3506982166.

The spelling of 79701691 in words is "seventy-nine million, seven hundred one thousand, six hundred ninety-one".