6767072421 has 4 divisors (see below), whose sum is σ = 9022763232. Its totient is φ = 4511381612.

The previous prime is 6767072381. The next prime is 6767072423. The reversal of 6767072421 is 1242707676.

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 a cyclic number.

It is not a de Polignac number, because 6767072421 - 2¹⁰ = 6767071397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6767072423) 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, 1127845401 + ... + 1127845406.

It is an arithmetic number, because the mean of its divisors is an integer number (2255690808).

Almost surely, 2^6767072421 is an apocalyptic number.

It is an amenable number.

6767072421 is a deficient number, since it is larger than the sum of its proper divisors (2255690811).

6767072421 is a wasteful number, since it uses less digits than its factorization.

6767072421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255690810.

The product of its (nonzero) digits is 197568, while the sum is 42.

The square root of 6767072421 is about 82262.2174573479. The cubic root of 6767072421 is about 1891.4735595391.

The spelling of 6767072421 in words is "six billion, seven hundred sixty-seven million, seventy-two thousand, four hundred twenty-one".