697399766637 has 16 divisors (see below), whose sum is σ = 1062781266432. Its totient is φ = 398485329840.

The previous prime is 697399766597. The next prime is 697399766681. The reversal of 697399766637 is 736667993796.

It is not a de Polignac number, because 697399766637 - 2⁶ = 697399766573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697399766137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 901939 + ... + 1486032.

It is an arithmetic number, because the mean of its divisors is an integer number (66423829152).

Almost surely, 2^697399766637 is an apocalyptic number.

It is an amenable number.

697399766637 is a deficient number, since it is larger than the sum of its proper divisors (365381499795).

697399766637 is a wasteful number, since it uses less digits than its factorization.

697399766637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2401888.

The product of its digits is 2916548208, while the sum is 78.

The spelling of 697399766637 in words is "six hundred ninety-seven billion, three hundred ninety-nine million, seven hundred sixty-six thousand, six hundred thirty-seven".