67115479 has 2 divisors, whose sum is σ = 67115480. Its totient is φ = 67115478.

The previous prime is 67115443. The next prime is 67115491. The reversal of 67115479 is 97451176.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67115479 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67115179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33557739 + 33557740.

It is an arithmetic number, because the mean of its divisors is an integer number (33557740).

Almost surely, 2^67115479 is an apocalyptic number.

67115479 is a deficient number, since it is larger than the sum of its proper divisors (1).

67115479 is an equidigital number, since it uses as much as digits as its factorization.

67115479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 40.

The square root of 67115479 is about 8192.4037376096. The cubic root of 67115479 is about 406.3880211422.

The spelling of 67115479 in words is "sixty-seven million, one hundred fifteen thousand, four hundred seventy-nine".