3125661 has 24 divisors (see below), whose sum is σ = 5291424. Its totient is φ = 1622880.

The previous prime is 3125659. The next prime is 3125669. The reversal of 3125661 is 1665213.

It is not a de Polignac number, because 3125661 - 2¹ = 3125659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3125669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 651 + ... + 2583.

It is an arithmetic number, because the mean of its divisors is an integer number (220476).

Almost surely, 2^3125661 is an apocalyptic number.

It is an amenable number.

3125661 is a deficient number, since it is larger than the sum of its proper divisors (2165763).

3125661 is a wasteful number, since it uses less digits than its factorization.

3125661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1961 (or 1954 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

The square root of 3125661 is about 1767.9539021140. The cubic root of 3125661 is about 146.2111943211.

The spelling of 3125661 in words is "three million, one hundred twenty-five thousand, six hundred sixty-one".