3699657 has 24 divisors (see below), whose sum is σ = 5829824. Its totient is φ = 2247264.

The previous prime is 3699629. The next prime is 3699671. The reversal of 3699657 is 7569963.

It is not a de Polignac number, because 3699657 - 2⁸ = 3699401 is a prime.

It is a d-powerful number, because it can be written as 3 + 6⁵ + 9² + 9⁵ + 6⁸ + 5⁹ + 7 .

3699657 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3699607) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11898 + ... + 12204.

Almost surely, 2^3699657 is an apocalyptic number.

It is an amenable number.

3699657 is a deficient number, since it is larger than the sum of its proper divisors (2130167).

3699657 is a wasteful number, since it uses less digits than its factorization.

3699657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 426 counting only the distinct ones).

The product of its digits is 306180, while the sum is 45.

The square root of 3699657 is about 1923.4492454962. The cubic root of 3699657 is about 154.6632578478.

It can be divided in two parts, 3699 and 657, that added together give a square (4356 = 66²).

The spelling of 3699657 in words is "three million, six hundred ninety-nine thousand, six hundred fifty-seven".