697769979579 has 8 divisors (see below), whose sum is σ = 1033733303120. Its totient is φ = 465179986368.

The previous prime is 697769979493. The next prime is 697769979587. The reversal of 697769979579 is 975979967796.

It is not a de Polignac number, because 697769979579 - 2¹⁹ = 697769455291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (697769979779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12921666262 + ... + 12921666315.

It is an arithmetic number, because the mean of its divisors is an integer number (129216662890).

Almost surely, 2^697769979579 is an apocalyptic number.

697769979579 is a deficient number, since it is larger than the sum of its proper divisors (335963323541).

697769979579 is a wasteful number, since it uses less digits than its factorization.

697769979579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25843332586 (or 25843332580 counting only the distinct ones).

The product of its digits is 25519796820, while the sum is 90.

The spelling of 697769979579 in words is "six hundred ninety-seven billion, seven hundred sixty-nine million, nine hundred seventy-nine thousand, five hundred seventy-nine".