76868215 has 4 divisors (see below), whose sum is σ = 92241864. Its totient is φ = 61494568.

The previous prime is 76868191. The next prime is 76868249. The reversal of 76868215 is 51286867.

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

It is a cyclic number.

It is not a de Polignac number, because 76868215 - 2⁷ = 76868087 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 7686817 + ... + 7686826.

It is an arithmetic number, because the mean of its divisors is an integer number (23060466).

Almost surely, 2^76868215 is an apocalyptic number.

76868215 is a deficient number, since it is larger than the sum of its proper divisors (15373649).

76868215 is a wasteful number, since it uses less digits than its factorization.

76868215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15373648.

The product of its digits is 161280, while the sum is 43.

The square root of 76868215 is about 8767.4520243911. The cubic root of 76868215 is about 425.1892398308.

The spelling of 76868215 in words is "seventy-six million, eight hundred sixty-eight thousand, two hundred fifteen".