697986689796 has 144 divisors (see below), whose sum is σ = 1954244755008. Its totient is φ = 208272556800.

The previous prime is 697986689767. The next prime is 697986689821.

It is a happy number.

697986689796 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 122601526 + ... + 122607218.

It is an arithmetic number, because the mean of its divisors is an integer number (13571144132).

Almost surely, 2^697986689796 is an apocalyptic number.

697986689796 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 697986689796, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (977122377504).

697986689796 is an abundant number, since it is smaller than the sum of its proper divisors (1256258065212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

697986689796 is a wasteful number, since it uses less digits than its factorization.

697986689796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10402 (or 10397 counting only the distinct ones).

The product of its digits is 26665583616, while the sum is 90.

The spelling of 697986689796 in words is "six hundred ninety-seven billion, nine hundred eighty-six million, six hundred eighty-nine thousand, seven hundred ninety-six".