2390651 has 4 divisors (see below), whose sum is σ = 2429904. Its totient is φ = 2351400.

The previous prime is 2390623. The next prime is 2390653. The reversal of 2390651 is 1560932.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2390651 is a prime.

It is a super-3 number, since 3×2390651³ = 40989233310687193353, which contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2390651.

It is not an unprimeable number, because it can be changed into a prime (2390653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19535 + ... + 19656.

It is an arithmetic number, because the mean of its divisors is an integer number (607476).

2^2390651 is an apocalyptic number.

2390651 is a deficient number, since it is larger than the sum of its proper divisors (39253).

2390651 is an equidigital number, since it uses as much as digits as its factorization.

2390651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39252.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 2390651 is about 1546.1730174854. The cubic root of 2390651 is about 133.7125157718.

The spelling of 2390651 in words is "two million, three hundred ninety thousand, six hundred fifty-one".