3685647 has 16 divisors (see below), whose sum is σ = 5644800. Its totient is φ = 2095392.

The previous prime is 3685631. The next prime is 3685657. The reversal of 3685647 is 7465863.

It is not a de Polignac number, because 3685647 - 2⁴ = 3685631 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3685657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5854 + ... + 6452.

It is an arithmetic number, because the mean of its divisors is an integer number (352800).

Almost surely, 2^3685647 is an apocalyptic number.

3685647 is a deficient number, since it is larger than the sum of its proper divisors (1959153).

3685647 is a wasteful number, since it uses less digits than its factorization.

3685647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902.

The product of its digits is 120960, while the sum is 39.

The square root of 3685647 is about 1919.8038962352. The cubic root of 3685647 is about 154.4677826854.

The spelling of 3685647 in words is "three million, six hundred eighty-five thousand, six hundred forty-seven".