697086 has 40 divisors (see below), whose sum is σ = 1687224. Its totient is φ = 213840.

The previous prime is 697079. The next prime is 697087. The reversal of 697086 is 680796.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 697086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697087) by changing a digit.

697086 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1941 + ... + 2271.

2⁶⁹⁷⁰⁸⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 697086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (843612).

697086 is an abundant number, since it is smaller than the sum of its proper divisors (990138).

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

697086 is a wasteful number, since it uses less digits than its factorization.

697086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 697086 is about 834.9167623183. The cubic root of 697086 is about 88.6670215625.

Subtracting from 697086 its reverse (680796), we obtain a triangular number (16290 = T₁₈₀).

It can be divided in two parts, 6970 and 86, that added together give a square (7056 = 84²).

The spelling of 697086 in words is "six hundred ninety-seven thousand, eighty-six".