3870681 has 8 divisors (see below), whose sum is σ = 5300544. Its totient is φ = 2510640.

The previous prime is 3870667. The next prime is 3870689. The reversal of 3870681 is 1860783.

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

It is not a de Polignac number, because 3870681 - 2⁵ = 3870649 is a prime.

It is a super-2 number, since 2×3870681² = 29964342807522, which contains 22 as substring.

3870681 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3870689) 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, 17325 + ... + 17546.

It is an arithmetic number, because the mean of its divisors is an integer number (662568).

Almost surely, 2^3870681 is an apocalyptic number.

It is an amenable number.

3870681 is a deficient number, since it is larger than the sum of its proper divisors (1429863).

3870681 is a wasteful number, since it uses less digits than its factorization.

3870681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34911.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 3870681 is about 1967.4046355542. The cubic root of 3870681 is about 157.0106555576.

The spelling of 3870681 in words is "three million, eight hundred seventy thousand, six hundred eighty-one".