76840215 has 8 divisors (see below), whose sum is σ = 122944368. Its totient is φ = 40981440.

The previous prime is 76840201. The next prime is 76840229. The reversal of 76840215 is 51204867.

It is an interprime number because it is at equal distance from previous prime (76840201) and next prime (76840229).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 76840215 - 2⁷ = 76840087 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2561326 + ... + 2561355.

It is an arithmetic number, because the mean of its divisors is an integer number (15368046).

Almost surely, 2^76840215 is an apocalyptic number.

76840215 is a deficient number, since it is larger than the sum of its proper divisors (46104153).

76840215 is a wasteful number, since it uses less digits than its factorization.

76840215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5122689.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 76840215 is about 8765.8550638258. The cubic root of 76840215 is about 425.1376071130.

The spelling of 76840215 in words is "seventy-six million, eight hundred forty thousand, two hundred fifteen".