2640673 has 16 divisors (see below), whose sum is σ = 3198976. Its totient is φ = 2131920.

The previous prime is 2640643. The next prime is 2640683. The reversal of 2640673 is 3760462.

It is a de Polignac number, because none of the positive numbers 2^k-2640673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2640643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9190 + ... + 9472.

It is an arithmetic number, because the mean of its divisors is an integer number (199936).

2^2640673 is an apocalyptic number.

It is an amenable number.

2640673 is a deficient number, since it is larger than the sum of its proper divisors (558303).

2640673 is a wasteful number, since it uses less digits than its factorization.

2640673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 2640673 is about 1625.0147691637. The cubic root of 2640673 is about 138.2202078318.

The spelling of 2640673 in words is "two million, six hundred forty thousand, six hundred seventy-three".