2650664 has 8 divisors (see below), whose sum is σ = 4970010. Its totient is φ = 1325328.

The previous prime is 2650663. The next prime is 2650667. The reversal of 2650664 is 4660562.

It can be written as a sum of positive squares in only one way, i.e., 2592100 + 58564 = 1610^2 + 242^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2650663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165659 + ... + 165674.

2^2650664 is an apocalyptic number.

It is an amenable number.

2650664 is a deficient number, since it is larger than the sum of its proper divisors (2319346).

2650664 is a wasteful number, since it uses less digits than its factorization.

2650664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331339 (or 331335 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 2650664 is about 1628.0859928149. The cubic root of 2650664 is about 138.3943074050.

The spelling of 2650664 in words is "two million, six hundred fifty thousand, six hundred sixty-four".