4997658681 has 12 divisors (see below), whose sum is σ = 7270776240. Its totient is φ = 3307802040.

The previous prime is 4997658649. The next prime is 4997658683. The reversal of 4997658681 is 1868567994.

4997658681 is a `hidden beast` number, since 49 + 9 + 7 + 6 + 586 + 8 + 1 = 666.

It is not a de Polignac number, because 4997658681 - 2⁵ = 4997658649 is a prime.

It is a super-2 number, since 2×4997658681² = 49953184583549319522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4997658683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1996215 + ... + 1998716.

It is an arithmetic number, because the mean of its divisors is an integer number (605898020).

Almost surely, 2^4997658681 is an apocalyptic number.

It is an amenable number.

4997658681 is a deficient number, since it is larger than the sum of its proper divisors (2273117559).

4997658681 is a wasteful number, since it uses less digits than its factorization.

4997658681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3995076 (or 3995073 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 63.

The square root of 4997658681 is about 70694.1205546826. The cubic root of 4997658681 is about 1709.7089983934.

The spelling of 4997658681 in words is "four billion, nine hundred ninety-seven million, six hundred fifty-eight thousand, six hundred eighty-one".