67928713 has 4 divisors (see below), whose sum is σ = 67963408. Its totient is φ = 67894020.

The previous prime is 67928689. The next prime is 67928737. The reversal of 67928713 is 31782976.

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 an interprime number because it is at equal distance from previous prime (67928689) and next prime (67928737).

It is a cyclic number.

It is not a de Polignac number, because 67928713 - 2²⁵ = 34374281 is a prime.

It is a super-2 number, since 2×67928713² = 9228620099672738, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67928713.

It is not an unprimeable number, because it can be changed into a prime (67928213) 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, 14223 + ... + 18388.

It is an arithmetic number, because the mean of its divisors is an integer number (16990852).

Almost surely, 2^67928713 is an apocalyptic number.

It is an amenable number.

67928713 is a deficient number, since it is larger than the sum of its proper divisors (34695).

67928713 is a wasteful number, since it uses less digits than its factorization.

67928713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34694.

The product of its digits is 127008, while the sum is 43.

The square root of 67928713 is about 8241.8877085289. The cubic root of 67928713 is about 408.0228284837.

It can be divided in two parts, 679 and 28713, that added together give a palindrome (29392).

The spelling of 67928713 in words is "sixty-seven million, nine hundred twenty-eight thousand, seven hundred thirteen".