696649 has 4 divisors (see below), whose sum is σ = 698320. Its totient is φ = 694980.

The previous prime is 696629. The next prime is 696653. The reversal of 696649 is 946696.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 696649 - 2⁵ = 696617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (696629) 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, 382 + ... + 1240.

It is an arithmetic number, because the mean of its divisors is an integer number (174580).

2⁶⁹⁶⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

696649 is a deficient number, since it is larger than the sum of its proper divisors (1671).

696649 is an equidigital number, since it uses as much as digits as its factorization.

696649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670.

The product of its digits is 69984, while the sum is 40.

The square root of 696649 is about 834.6550185556. The cubic root of 696649 is about 88.6484893737.

Subtracting 696649 from its reverse (946696), we obtain a cube (250047 = 63³).

The spelling of 696649 in words is "six hundred ninety-six thousand, six hundred forty-nine".