2621642 has 8 divisors (see below), whose sum is σ = 3955716. Its totient is φ = 1303072.

The previous prime is 2621617. The next prime is 2621669. The reversal of 2621642 is 2461262.

It can be written as a sum of positive squares in 2 ways, for example, as 2588881 + 32761 = 1609^2 + 181^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3443 + ... + 4134.

2^2621642 is an apocalyptic number.

2621642 is a deficient number, since it is larger than the sum of its proper divisors (1334074).

2621642 is a wasteful number, since it uses less digits than its factorization.

2621642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7752.

The product of its digits is 1152, while the sum is 23.

The square root of 2621642 is about 1619.1485416724. The cubic root of 2621642 is about 137.8873617036.

The spelling of 2621642 in words is "two million, six hundred twenty-one thousand, six hundred forty-two".