3890681 has 8 divisors (see below), whose sum is σ = 3978240. Its totient is φ = 3804192.

The previous prime is 3890659. The next prime is 3890693. The reversal of 3890681 is 1860983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3890681 - 2¹⁰ = 3889657 is a prime.

It is a super-2 number, since 2×3890681² = 30274797287522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3890651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16160 + ... + 16398.

It is an arithmetic number, because the mean of its divisors is an integer number (497280).

Almost surely, 2^3890681 is an apocalyptic number.

It is an amenable number.

3890681 is a deficient number, since it is larger than the sum of its proper divisors (87559).

3890681 is a wasteful number, since it uses less digits than its factorization.

3890681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 3890681 is about 1972.4809251296. The cubic root of 3890681 is about 157.2806183918.

The spelling of 3890681 in words is "three million, eight hundred ninety thousand, six hundred eighty-one".