2664945 has 12 divisors (see below), whose sum is σ = 4619316. Its totient is φ = 1421280.

The previous prime is 2664943. The next prime is 2664953. The reversal of 2664945 is 5494662.

2664945 is a `hidden beast` number, since 2 + 6 + 649 + 4 + 5 = 666.

2664945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 898704 + 1766241 = 948^2 + 1329^2 .

It is not a de Polignac number, because 2664945 - 2¹ = 2664943 is a prime.

It is a super-4 number, since 4×2664945⁴ (a number of 27 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (2664943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29566 + ... + 29655.

It is an arithmetic number, because the mean of its divisors is an integer number (384943).

2^2664945 is an apocalyptic number.

It is an amenable number.

2664945 is a deficient number, since it is larger than the sum of its proper divisors (1954371).

2664945 is a wasteful number, since it uses less digits than its factorization.

2664945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59232 (or 59229 counting only the distinct ones).

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

The square root of 2664945 is about 1632.4659261375. The cubic root of 2664945 is about 138.6424050204.

The spelling of 2664945 in words is "two million, six hundred sixty-four thousand, nine hundred forty-five".