2664549 has 32 divisors (see below), whose sum is σ = 4233600. Its totient is φ = 1653120.

The previous prime is 2664547. The next prime is 2664551. The reversal of 2664549 is 9454662.

2664549 is a `hidden beast` number, since 2 + 6 + 645 + 4 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (2664547) and next prime (2664551).

It is not a de Polignac number, because 2664549 - 2¹ = 2664547 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

Its product of digits (51840) is a multiple of the sum of its prime factors (162).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2664547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32062 + ... + 32144.

It is an arithmetic number, because the mean of its divisors is an integer number (132300).

2^2664549 is an apocalyptic number.

2664549 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2664549 is a deficient number, since it is larger than the sum of its proper divisors (1569051).

2664549 is a wasteful number, since it uses less digits than its factorization.

2664549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 156 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 2664549 is about 1632.3446327293. The cubic root of 2664549 is about 138.6355374475.

The spelling of 2664549 in words is "two million, six hundred sixty-four thousand, five hundred forty-nine".