6724962921 has 4 divisors (see below), whose sum is σ = 8966617232. Its totient is φ = 4483308612.

The previous prime is 6724962919. The next prime is 6724962949. The reversal of 6724962921 is 1292694276.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6724962921 - 2¹ = 6724962919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6724962911) 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, 1120827151 + ... + 1120827156.

It is an arithmetic number, because the mean of its divisors is an integer number (2241654308).

Almost surely, 2^6724962921 is an apocalyptic number.

It is an amenable number.

6724962921 is a deficient number, since it is larger than the sum of its proper divisors (2241654311).

6724962921 is a wasteful number, since it uses less digits than its factorization.

6724962921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241654310.

The product of its digits is 653184, while the sum is 48.

The square root of 6724962921 is about 82005.8712593190. The cubic root of 6724962921 is about 1887.5420322263.

The spelling of 6724962921 in words is "six billion, seven hundred twenty-four million, nine hundred sixty-two thousand, nine hundred twenty-one".