4670668921 has 4 divisors (see below), whose sum is σ = 4831726500. Its totient is φ = 4509611344.

The previous prime is 4670668907. The next prime is 4670668931. The reversal of 4670668921 is 1298660764.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 932691600 + 3737977321 = 30540^2 + 61139^2 .

It is a cyclic number.

It is not a de Polignac number, because 4670668921 - 2¹¹ = 4670666873 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4670668931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80528746 + ... + 80528803.

It is an arithmetic number, because the mean of its divisors is an integer number (1207931625).

Almost surely, 2^4670668921 is an apocalyptic number.

It is an amenable number.

4670668921 is a deficient number, since it is larger than the sum of its proper divisors (161057579).

4670668921 is a wasteful number, since it uses less digits than its factorization.

4670668921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161057578.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 4670668921 is about 68342.2923305913. The cubic root of 4670668921 is about 1671.5769011828.

The spelling of 4670668921 in words is "four billion, six hundred seventy million, six hundred sixty-eight thousand, nine hundred twenty-one".