2990664 has 48 divisors (see below), whose sum is σ = 8225100. Its totient is φ = 981504.

The previous prime is 2990639. The next prime is 2990677. The reversal of 2990664 is 4660992.

It can be written as a sum of positive squares in 2 ways, for example, as 2924100 + 66564 = 1710^2 + 258^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4972 + ... + 5540.

2^2990664 is an apocalyptic number.

2990664 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 2990664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4112550).

2990664 is an abundant number, since it is smaller than the sum of its proper divisors (5234436).

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

2990664 is a wasteful number, since it uses less digits than its factorization.

2990664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654 (or 647 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 2990664 is about 1729.3536364781. The cubic root of 2990664 is about 144.0751922117.

The spelling of 2990664 in words is "two million, nine hundred ninety thousand, six hundred sixty-four".