2496721 has 2 divisors, whose sum is σ = 2496722. Its totient is φ = 2496720.

The previous prime is 2496707. The next prime is 2496727. The reversal of 2496721 is 1276942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2446096 + 50625 = 1564^2 + 225^2 .

It is a cyclic number.

It is not a de Polignac number, because 2496721 - 2¹¹ = 2494673 is a prime.

It is not a weakly prime, because it can be changed into another prime (2496727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1248360 + 1248361.

It is an arithmetic number, because the mean of its divisors is an integer number (1248361).

2^2496721 is an apocalyptic number.

It is an amenable number.

2496721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2496721 is an equidigital number, since it uses as much as digits as its factorization.

2496721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 31.

The square root of 2496721 is about 1580.1015790132. The cubic root of 2496721 is about 135.6615176995.

The spelling of 2496721 in words is "two million, four hundred ninety-six thousand, seven hundred twenty-one".