697636 has 12 divisors (see below), whose sum is σ = 1274112. Its totient is φ = 333608.

The previous prime is 697603. The next prime is 697637. The reversal of 697636 is 636796.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 697595 and 697604.

It is not an unprimeable number, because it can be changed into a prime (697637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3700 + ... + 3883.

It is an arithmetic number, because the mean of its divisors is an integer number (106176).

2⁶⁹⁷⁶³⁶ is an apocalyptic number.

It is an amenable number.

697636 is a deficient number, since it is larger than the sum of its proper divisors (576476).

697636 is a wasteful number, since it uses less digits than its factorization.

697636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7610 (or 7608 counting only the distinct ones).

The product of its digits is 40824, while the sum is 37.

The square root of 697636 is about 835.2460715262. The cubic root of 697636 is about 88.6903348227.

The spelling of 697636 in words is "six hundred ninety-seven thousand, six hundred thirty-six".