2576664 has 64 divisors (see below), whose sum is σ = 7296000. Its totient is φ = 842400.

The previous prime is 2576663. The next prime is 2576669. The reversal of 2576664 is 4666752.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a d-powerful number, because it can be written as 2⁵ + 5³ + 7⁷ + 6² + 6⁵ + 6⁸ + 4⁸ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2576663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16989 + ... + 17139.

It is an arithmetic number, because the mean of its divisors is an integer number (114000).

2^2576664 is an apocalyptic number.

2576664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2576664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3648000).

2576664 is an abundant number, since it is smaller than the sum of its proper divisors (4719336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2576664 is a wasteful number, since it uses less digits than its factorization.

2576664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 235 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 2576664 is about 1605.1990530772. The cubic root of 2576664 is about 137.0942573331.

It can be divided in two parts, 2576 and 664, that added together give a triangular number (3240 = T₈₀).

The spelling of 2576664 in words is "two million, five hundred seventy-six thousand, six hundred sixty-four".