67923161 has 4 divisors (see below), whose sum is σ = 68302800. Its totient is φ = 67543524.

The previous prime is 67923137. The next prime is 67923179. The reversal of 67923161 is 16132976.

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 a de Polignac number, because none of the positive numbers 2^k-67923161 is a prime.

It is a super-2 number, since 2×67923161² = 9227111600463842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67923181) 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, 189551 + ... + 189908.

It is an arithmetic number, because the mean of its divisors is an integer number (17075700).

Almost surely, 2^67923161 is an apocalyptic number.

It is an amenable number.

67923161 is a deficient number, since it is larger than the sum of its proper divisors (379639).

67923161 is a wasteful number, since it uses less digits than its factorization.

67923161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379638.

The product of its digits is 13608, while the sum is 35.

The square root of 67923161 is about 8241.5508856040. The cubic root of 67923161 is about 408.0117119059.

The spelling of 67923161 in words is "sixty-seven million, nine hundred twenty-three thousand, one hundred sixty-one".