2648661 has 8 divisors (see below), whose sum is σ = 3541440. Its totient is φ = 1760832.

The previous prime is 2648629. The next prime is 2648669. The reversal of 2648661 is 1668462.

It is a happy number.

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

It is not a de Polignac number, because 2648661 - 2⁵ = 2648629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2648669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280 + ... + 2318.

It is an arithmetic number, because the mean of its divisors is an integer number (442680).

2^2648661 is an apocalyptic number.

It is an amenable number.

2648661 is a deficient number, since it is larger than the sum of its proper divisors (892779).

2648661 is a wasteful number, since it uses less digits than its factorization.

2648661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2475.

The product of its digits is 13824, while the sum is 33.

The square root of 2648661 is about 1627.4707370641. The cubic root of 2648661 is about 138.3594389531.

The spelling of 2648661 in words is "two million, six hundred forty-eight thousand, six hundred sixty-one".