2626661 has 4 divisors (see below), whose sum is σ = 2711424. Its totient is φ = 2541900.

The previous prime is 2626649. The next prime is 2626691. The reversal of 2626661 is 1666262.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2626661 - 2⁶ = 2626597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2626691) 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, 42335 + ... + 42396.

It is an arithmetic number, because the mean of its divisors is an integer number (677856).

2^2626661 is an apocalyptic number.

It is an amenable number.

2626661 is a deficient number, since it is larger than the sum of its proper divisors (84763).

2626661 is an equidigital number, since it uses as much as digits as its factorization.

2626661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84762.

The product of its digits is 5184, while the sum is 29.

The square root of 2626661 is about 1620.6976892684. The cubic root of 2626661 is about 137.9752983863.

The spelling of 2626661 in words is "two million, six hundred twenty-six thousand, six hundred sixty-one".