3163661 has 4 divisors (see below), whose sum is σ = 3191772. Its totient is φ = 3135552.

The previous prime is 3163637. The next prime is 3163663. The reversal of 3163661 is 1663613.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1394761 + 1768900 = 1181^2 + 1330^2 .

It is a cyclic number.

It is not a de Polignac number, because 3163661 - 2⁶ = 3163597 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3163661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3163663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13886 + ... + 14111.

It is an arithmetic number, because the mean of its divisors is an integer number (797943).

Almost surely, 2^3163661 is an apocalyptic number.

It is an amenable number.

3163661 is a deficient number, since it is larger than the sum of its proper divisors (28111).

3163661 is a wasteful number, since it uses less digits than its factorization.

3163661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28110.

The product of its digits is 1944, while the sum is 26.

The square root of 3163661 is about 1778.6683220882. The cubic root of 3163661 is about 146.8013266244.

The spelling of 3163661 in words is "three million, one hundred sixty-three thousand, six hundred sixty-one".