7976902690 has 32 divisors (see below), whose sum is σ = 15727290480. Its totient is φ = 2899513344.

The previous prime is 7976902657. The next prime is 7976902691. The reversal of 7976902690 is 962096797.

It can be written as a sum of positive squares in 8 ways, for example, as 7238095929 + 738806761 = 85077^2 + 27181^2 .

It is a super-2 number, since 2×7976902690² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7976902691) 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, 804087 + ... + 813946.

Almost surely, 2^7976902690 is an apocalyptic number.

7976902690 is a deficient number, since it is larger than the sum of its proper divisors (7750387790).

7976902690 is a wasteful number, since it uses less digits than its factorization.

7976902690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618086.

The product of its (nonzero) digits is 2571912, while the sum is 55.

The square root of 7976902690 is about 89313.5078809471. The cubic root of 7976902690 is about 1998.0733688087.

The spelling of 7976902690 in words is "seven billion, nine hundred seventy-six million, nine hundred two thousand, six hundred ninety".