67792921 has 8 divisors (see below), whose sum is σ = 79059200. Its totient is φ = 58107924.

The previous prime is 67792913. The next prime is 67792927. The reversal of 67792921 is 12929776.

It is not a de Polignac number, because 67792921 - 2³ = 67792913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67792927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98481 + ... + 99166.

It is an arithmetic number, because the mean of its divisors is an integer number (9882400).

Almost surely, 2^67792921 is an apocalyptic number.

It is an amenable number.

67792921 is a deficient number, since it is larger than the sum of its proper divisors (11266279).

67792921 is an equidigital number, since it uses as much as digits as its factorization.

67792921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197668 (or 197654 counting only the distinct ones).

The product of its digits is 95256, while the sum is 43.

The square root of 67792921 is about 8233.6456688395. The cubic root of 67792921 is about 407.7507628910.

The spelling of 67792921 in words is "sixty-seven million, seven hundred ninety-two thousand, nine hundred twenty-one".