2664791 has 8 divisors (see below), whose sum is σ = 2793984. Its totient is φ = 2538360.

The previous prime is 2664763. The next prime is 2664793. The reversal of 2664791 is 1974662.

2664791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2664791 is a prime.

It is a super-2 number, since 2×2664791² = 14202222147362, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2664793) 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 7 ways as a sum of consecutive naturals, for example, 1436 + ... + 2718.

It is an arithmetic number, because the mean of its divisors is an integer number (349248).

2^2664791 is an apocalyptic number.

2664791 is a deficient number, since it is larger than the sum of its proper divisors (129193).

2664791 is a wasteful number, since it uses less digits than its factorization.

2664791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381.

The product of its digits is 18144, while the sum is 35.

The square root of 2664791 is about 1632.4187575497. The cubic root of 2664791 is about 138.6397343785.

It can be divided in two parts, 266 and 4791, that multiplied together give a triangular number (1274406 = T₁₅₉₆).

The spelling of 2664791 in words is "two million, six hundred sixty-four thousand, seven hundred ninety-one".