697999977 has 8 divisors (see below), whose sum is σ = 1034074080. Its totient is φ = 465333300.

The previous prime is 697999969. The next prime is 697999993. The reversal of 697999977 is 779999796.

It is not a de Polignac number, because 697999977 - 2³ = 697999969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (697999777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12925899 + ... + 12925952.

It is an arithmetic number, because the mean of its divisors is an integer number (129259260).

Almost surely, 2^697999977 is an apocalyptic number.

It is an amenable number.

697999977 is a deficient number, since it is larger than the sum of its proper divisors (336074103).

697999977 is a wasteful number, since it uses less digits than its factorization.

697999977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25851860 (or 25851854 counting only the distinct ones).

The product of its digits is 121522842, while the sum is 72.

The square root of 697999977 is about 26419.6891919644. The cubic root of 697999977 is about 887.0575625047.

The spelling of 697999977 in words is "six hundred ninety-seven million, nine hundred ninety-nine thousand, nine hundred seventy-seven".