697609699999939 has 2 divisors, whose sum is σ = 697609699999940. Its totient is φ = 697609699999938.

The previous prime is 697609699999907. The next prime is 697609699999957. The reversal of 697609699999939 is 939999996906796.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 697609699999939 - 2⁵ = 697609699999907 is a prime.

It is not a weakly prime, because it can be changed into another prime (697609699999999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348804849999969 + 348804849999970.

It is an arithmetic number, because the mean of its divisors is an integer number (348804849999970).

Almost surely, 2^{697609699999939} is an apocalyptic number.

697609699999939 is a deficient number, since it is larger than the sum of its proper divisors (1).

697609699999939 is an equidigital number, since it uses as much as digits as its factorization.

697609699999939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1757339338104, while the sum is 109.

The spelling of 697609699999939 in words is "six hundred ninety-seven trillion, six hundred nine billion, six hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred thirty-nine".