67923479 has 4 divisors (see below), whose sum is σ = 73148376. Its totient is φ = 62698584.

The previous prime is 67923473. The next prime is 67923487. The reversal of 67923479 is 97432976.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 67923479 - 2⁸ = 67923223 is a prime.

It is a super-2 number, since 2×67923479² = 9227197998926882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67923473) 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, 2612429 + ... + 2612454.

It is an arithmetic number, because the mean of its divisors is an integer number (18287094).

Almost surely, 2^67923479 is an apocalyptic number.

67923479 is a deficient number, since it is larger than the sum of its proper divisors (5224897).

67923479 is a wasteful number, since it uses less digits than its factorization.

67923479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5224896.

The product of its digits is 571536, while the sum is 47.

The square root of 67923479 is about 8241.5701780668. The cubic root of 67923479 is about 408.0123486427.

The spelling of 67923479 in words is "sixty-seven million, nine hundred twenty-three thousand, four hundred seventy-nine".