2621667 has 8 divisors (see below), whose sum is σ = 3577024. Its totient is φ = 1707048.

The previous prime is 2621617. The next prime is 2621669. The reversal of 2621667 is 7661262.

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

It is not a de Polignac number, because 2621667 - 2⁶ = 2621603 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (2621669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10033 + ... + 10290.

It is an arithmetic number, because the mean of its divisors is an integer number (447128).

2^2621667 is an apocalyptic number.

2621667 is a deficient number, since it is larger than the sum of its proper divisors (955357).

2621667 is a wasteful number, since it uses less digits than its factorization.

2621667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20369.

The product of its digits is 6048, while the sum is 30.

The square root of 2621667 is about 1619.1562617610. The cubic root of 2621667 is about 137.8878000006.

The spelling of 2621667 in words is "two million, six hundred twenty-one thousand, six hundred sixty-seven".