68273815 has 12 divisors (see below), whose sum is σ = 83985912. Its totient is φ = 53280320.

The previous prime is 68273789. The next prime is 68273833. The reversal of 68273815 is 51837286.

It is a de Polignac number, because none of the positive numbers 2^k-68273815 is a prime.

It is a super-2 number, since 2×68273815² = 9322627629308450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4344 + ... + 12466.

It is an arithmetic number, because the mean of its divisors is an integer number (6998826).

Almost surely, 2^68273815 is an apocalyptic number.

68273815 is a deficient number, since it is larger than the sum of its proper divisors (15712097).

68273815 is an equidigital number, since it uses as much as digits as its factorization.

68273815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8210 (or 8169 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 68273815 is about 8262.7970445848. The cubic root of 68273815 is about 408.7126286413.

The spelling of 68273815 in words is "sixty-eight million, two hundred seventy-three thousand, eight hundred fifteen".