3163621 has 4 divisors (see below), whose sum is σ = 3168972. Its totient is φ = 3158272.

The previous prime is 3163619. The next prime is 3163631. The reversal of 3163621 is 1263613.

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 3101121 + 62500 = 1761^2 + 250^2 .

It is a cyclic number.

It is not a de Polignac number, because 3163621 - 2¹ = 3163619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3163592 and 3163601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3163631) 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, 1660 + ... + 3013.

It is an arithmetic number, because the mean of its divisors is an integer number (792243).

Almost surely, 2^3163621 is an apocalyptic number.

It is an amenable number.

3163621 is a deficient number, since it is larger than the sum of its proper divisors (5351).

3163621 is an equidigital number, since it uses as much as digits as its factorization.

3163621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5350.

The product of its digits is 648, while the sum is 22.

The square root of 3163621 is about 1778.6570776853. The cubic root of 3163621 is about 146.8007079237.

The spelling of 3163621 in words is "three million, one hundred sixty-three thousand, six hundred twenty-one".