2669664 has 24 divisors (see below), whose sum is σ = 7008120. Its totient is φ = 889856.

The previous prime is 2669659. The next prime is 2669669. The reversal of 2669664 is 4669662.

It is an interprime number because it is at equal distance from previous prime (2669659) and next prime (2669669).

It is a tau number, because it is divible by the number of its divisors (24).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2669669) 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, 13809 + ... + 14000.

It is an arithmetic number, because the mean of its divisors is an integer number (292005).

2^2669664 is an apocalyptic number.

2669664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2669664 is an abundant number, since it is smaller than the sum of its proper divisors (4338456).

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

2669664 is a wasteful number, since it uses less digits than its factorization.

2669664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27822 (or 27814 counting only the distinct ones).

The product of its digits is 93312, while the sum is 39.

The square root of 2669664 is about 1633.9106462717. The cubic root of 2669664 is about 138.7241912876.

It can be divided in two parts, 2669 and 664, that added together give a palindrome (3333).

The spelling of 2669664 in words is "two million, six hundred sixty-nine thousand, six hundred sixty-four".