3900681 has 12 divisors (see below), whose sum is σ = 5931120. Its totient is φ = 2463480.

The previous prime is 3900679. The next prime is 3900691. The reversal of 3900681 is 1860093.

It is not a de Polignac number, because 3900681 - 2¹ = 3900679 is a prime.

It is a super-2 number, since 2×3900681² = 30430624527522, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3900691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11235 + ... + 11576.

It is an arithmetic number, because the mean of its divisors is an integer number (494260).

Almost surely, 2^3900681 is an apocalyptic number.

It is an amenable number.

3900681 is a deficient number, since it is larger than the sum of its proper divisors (2030439).

3900681 is a wasteful number, since it uses less digits than its factorization.

3900681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22836 (or 22833 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 3900681 is about 1975.0141771643. The cubic root of 3900681 is about 157.4152529717.

The spelling of 3900681 in words is "three million, nine hundred thousand, six hundred eighty-one".