67161923 has 2 divisors, whose sum is σ = 67161924. Its totient is φ = 67161922.

The previous prime is 67161893. The next prime is 67161937. The reversal of 67161923 is 32916176.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67161923 - 2¹⁶ = 67096387 is a prime.

It is not a weakly prime, because it can be changed into another prime (67161943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33580961 + 33580962.

It is an arithmetic number, because the mean of its divisors is an integer number (33580962).

Almost surely, 2^67161923 is an apocalyptic number.

67161923 is a deficient number, since it is larger than the sum of its proper divisors (1).

67161923 is an equidigital number, since it uses as much as digits as its factorization.

67161923 is an evil number, because the sum of its binary digits is even.

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

The square root of 67161923 is about 8195.2378244930. The cubic root of 67161923 is about 406.4817398766.

The spelling of 67161923 in words is "sixty-seven million, one hundred sixty-one thousand, nine hundred twenty-three".