2564746 has 8 divisors (see below), whose sum is σ = 3854340. Its totient is φ = 1279968.

The previous prime is 2564741. The next prime is 2564747. The reversal of 2564746 is 6474652.

It can be written as a sum of positive squares in 2 ways, for example, as 2325625 + 239121 = 1525^2 + 489^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2564741) 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, 790 + ... + 2398.

2^2564746 is an apocalyptic number.

2564746 is a deficient number, since it is larger than the sum of its proper divisors (1289594).

2564746 is a wasteful number, since it uses less digits than its factorization.

2564746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408.

The product of its digits is 40320, while the sum is 34.

The square root of 2564746 is about 1601.4824382428. The cubic root of 2564746 is about 136.8825604826.

The spelling of 2564746 in words is "two million, five hundred sixty-four thousand, seven hundred forty-six".