2990666987 has 16 divisors (see below), whose sum is σ = 3798980352. Its totient is φ = 2286417120.

The previous prime is 2990666981. The next prime is 2990667037. The reversal of 2990666987 is 7896660992.

It is a cyclic number.

It is not a de Polignac number, because 2990666987 - 2¹⁰ = 2990665963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2990666981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 362333 + ... + 370494.

It is an arithmetic number, because the mean of its divisors is an integer number (237436272).

Almost surely, 2^2990666987 is an apocalyptic number.

2990666987 is a deficient number, since it is larger than the sum of its proper divisors (808313365).

2990666987 is a wasteful number, since it uses less digits than its factorization.

2990666987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732898.

The product of its (nonzero) digits is 17635968, while the sum is 62.

The square root of 2990666987 is about 54686.9910216315. The cubic root of 2990666987 is about 1440.7524017788.

The spelling of 2990666987 in words is "two billion, nine hundred ninety million, six hundred sixty-six thousand, nine hundred eighty-seven".