2456641 has 4 divisors (see below), whose sum is σ = 2679984. Its totient is φ = 2233300.

The previous prime is 2456639. The next prime is 2456647. The reversal of 2456641 is 1466542.

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 2456641 - 2¹ = 2456639 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2456647) 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, 111655 + ... + 111676.

It is an arithmetic number, because the mean of its divisors is an integer number (669996).

2^2456641 is an apocalyptic number.

It is an amenable number.

2456641 is a deficient number, since it is larger than the sum of its proper divisors (223343).

2456641 is a wasteful number, since it uses less digits than its factorization.

2456641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223342.

The product of its digits is 5760, while the sum is 28.

The square root of 2456641 is about 1567.3675382628. The cubic root of 2456641 is about 134.9316709544.

Subtracting from 2456641 its reverse (1466542), we obtain a palindrome (990099).

It can be divided in two parts, 245 and 6641, that added together give a palindrome (6886).

The spelling of 2456641 in words is "two million, four hundred fifty-six thousand, six hundred forty-one".