3157690 has 16 divisors (see below), whose sum is σ = 5706792. Its totient is φ = 1257984.

The previous prime is 3157669. The next prime is 3157703. The reversal of 3157690 is 967513.

3157690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1343281 + 1814409 = 1159^2 + 1347^2 .

It is a super-2 number, since 2×3157690² = 19942012272200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2902 + ... + 3838.

Almost surely, 2^3157690 is an apocalyptic number.

3157690 is a deficient number, since it is larger than the sum of its proper divisors (2549102).

3157690 is a wasteful number, since it uses less digits than its factorization.

3157690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 3157690 is about 1776.9890264152. The cubic root of 3157690 is about 146.7089123025.

The spelling of 3157690 in words is "three million, one hundred fifty-seven thousand, six hundred ninety".