2491679 has 8 divisors (see below), whose sum is σ = 2640000. Its totient is φ = 2345112.

The previous prime is 2491669. The next prime is 2491681. The reversal of 2491679 is 9761942.

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

It is a cyclic number.

It is not a de Polignac number, because 2491679 - 2¹⁶ = 2426143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2491609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3452 + ... + 4110.

It is an arithmetic number, because the mean of its divisors is an integer number (330000).

2^2491679 is an apocalyptic number.

2491679 is a deficient number, since it is larger than the sum of its proper divisors (148321).

2491679 is a wasteful number, since it uses less digits than its factorization.

2491679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877.

The product of its digits is 27216, while the sum is 38.

The square root of 2491679 is about 1578.5053056610. The cubic root of 2491679 is about 135.5701356659.

The spelling of 2491679 in words is "two million, four hundred ninety-one thousand, six hundred seventy-nine".