67912313 has 4 divisors (see below), whose sum is σ = 77614080. Its totient is φ = 58210548.

The previous prime is 67912309. The next prime is 67912333. The reversal of 67912313 is 31321976.

It is a happy number.

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 not a de Polignac number, because 67912313 - 2² = 67912309 is a prime.

It is a super-2 number, since 2×67912313² = 9224164514019938, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 67912313.

It is not an unprimeable number, because it can be changed into a prime (67912303) 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, 4850873 + ... + 4850886.

It is an arithmetic number, because the mean of its divisors is an integer number (19403520).

Almost surely, 2^67912313 is an apocalyptic number.

It is an amenable number.

67912313 is a deficient number, since it is larger than the sum of its proper divisors (9701767).

67912313 is an equidigital number, since it uses as much as digits as its factorization.

67912313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9701766.

The product of its digits is 6804, while the sum is 32.

The square root of 67912313 is about 8240.8927307665. The cubic root of 67912313 is about 407.9899895820.

The spelling of 67912313 in words is "sixty-seven million, nine hundred twelve thousand, three hundred thirteen".