77940115 has 8 divisors (see below), whose sum is σ = 102030768. Its totient is φ = 56683680.

The previous prime is 77940103. The next prime is 77940143. The reversal of 77940115 is 51104977.

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

It is not a de Polignac number, because 77940115 - 2⁷ = 77939987 is a prime.

It is a Duffinian 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, 708492 + ... + 708601.

It is an arithmetic number, because the mean of its divisors is an integer number (12753846).

Almost surely, 2^77940115 is an apocalyptic number.

77940115 is a deficient number, since it is larger than the sum of its proper divisors (24090653).

77940115 is a wasteful number, since it uses less digits than its factorization.

77940115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417109.

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 77940115 is about 8828.3698948334. The cubic root of 77940115 is about 427.1564948046.

The spelling of 77940115 in words is "seventy-seven million, nine hundred forty thousand, one hundred fifteen".