697986 has 24 divisors (see below), whose sum is σ = 1601964. Its totient is φ = 218880.

The previous prime is 697979. The next prime is 697993. The reversal of 697986 is 689796.

It is an interprime number because it is at equal distance from previous prime (697979) and next prime (697993).

It can be written as a sum of positive squares in 2 ways, for example, as 670761 + 27225 = 819^2 + 165^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 835 + ... + 1446.

2⁶⁹⁷⁹⁸⁶ is an apocalyptic number.

697986 is an abundant number, since it is smaller than the sum of its proper divisors (903978).

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

697986 is a wasteful number, since it uses less digits than its factorization.

697986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2306 (or 2303 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 697986 is about 835.4555643480. The cubic root of 697986 is about 88.7051641546.

The spelling of 697986 in words is "six hundred ninety-seven thousand, nine hundred eighty-six".