3173661 has 10 divisors (see below), whose sum is σ = 4741022. Its totient is φ = 2115720.

The previous prime is 3173659. The next prime is 3173683. The reversal of 3173661 is 1663713.

3173661 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 only one way, i.e., 3080025 + 93636 = 1755^2 + 306^2 .

It is not a de Polignac number, because 3173661 - 2¹ = 3173659 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3173641) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 19510 + ... + 19671.

Almost surely, 2^3173661 is an apocalyptic number.

It is an amenable number.

3173661 is a deficient number, since it is larger than the sum of its proper divisors (1567361).

3173661 is an equidigital number, since it uses as much as digits as its factorization.

3173661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39193 (or 39184 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 3173661 is about 1781.4771960370. The cubic root of 3173661 is about 146.9558384628.

The spelling of 3173661 in words is "three million, one hundred seventy-three thousand, six hundred sixty-one".