4660021691 has 16 divisors (see below), whose sum is σ = 5332942944. Its totient is φ = 4033857024.

The previous prime is 4660021679. The next prime is 4660021703. The reversal of 4660021691 is 1961200664.

It is an interprime number because it is at equal distance from previous prime (4660021679) and next prime (4660021703).

It is a cyclic number.

It is not a de Polignac number, because 4660021691 - 2¹⁸ = 4659759547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4660021601) 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, 23156 + ... + 99278.

It is an arithmetic number, because the mean of its divisors is an integer number (333308934).

Almost surely, 2^4660021691 is an apocalyptic number.

4660021691 is a deficient number, since it is larger than the sum of its proper divisors (672921253).

4660021691 is a wasteful number, since it uses less digits than its factorization.

4660021691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76430.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 4660021691 is about 68264.3515387058. The cubic root of 4660021691 is about 1670.3057624372.

The spelling of 4660021691 in words is "four billion, six hundred sixty million, twenty-one thousand, six hundred ninety-one".