7631665168 has 20 divisors (see below), whose sum is σ = 14789421100. Its totient is φ = 3815040384.

The previous prime is 7631665147. The next prime is 7631665189. The reversal of 7631665168 is 8615661367.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7631665147) and next prime (7631665189).

It can be written as a sum of positive squares in 2 ways, for example, as 6569426704 + 1062238464 = 81052^2 + 32592^2 .

It is a super-3 number, since 3×7631665168³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34258 + ... + 128206.

It is an arithmetic number, because the mean of its divisors is an integer number (739471055).

Almost surely, 2^7631665168 is an apocalyptic number.

It is an amenable number.

7631665168 is a deficient number, since it is larger than the sum of its proper divisors (7157755932).

7631665168 is a wasteful number, since it uses less digits than its factorization.

7631665168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99034 (or 99028 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The square root of 7631665168 is about 87359.4022873325. The cubic root of 7631665168 is about 1968.8219199419.

The spelling of 7631665168 in words is "seven billion, six hundred thirty-one million, six hundred sixty-five thousand, one hundred sixty-eight".