2624668981 has 16 divisors (see below), whose sum is σ = 3049265088. Its totient is φ = 2232697600.

The previous prime is 2624668961. The next prime is 2624668993. The reversal of 2624668981 is 1898664262.

It is a cyclic number.

It is not a de Polignac number, because 2624668981 - 2⁹ = 2624668469 is a prime.

It is a super-2 number, since 2×2624668981² = 13777774519647156722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2624668931) 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, 8215 + ... + 72916.

It is an arithmetic number, because the mean of its divisors is an integer number (190579068).

Almost surely, 2^2624668981 is an apocalyptic number.

It is an amenable number.

2624668981 is a deficient number, since it is larger than the sum of its proper divisors (424596107).

2624668981 is a wasteful number, since it uses less digits than its factorization.

2624668981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81332.

The product of its digits is 1990656, while the sum is 52.

The square root of 2624668981 is about 51231.5233132883. The cubic root of 2624668981 is about 1379.4041012247.

The spelling of 2624668981 in words is "two billion, six hundred twenty-four million, six hundred sixty-eight thousand, nine hundred eighty-one".