76778374 has 4 divisors (see below), whose sum is σ = 115167564. Its totient is φ = 38389186.

The previous prime is 76778333. The next prime is 76778389. The reversal of 76778374 is 47387767.

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

It is a Smith number, since the sum of its digits (49) 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 as a sum of consecutive naturals, namely, 19194592 + ... + 19194595.

It is an arithmetic number, because the mean of its divisors is an integer number (28791891).

Almost surely, 2^76778374 is an apocalyptic number.

76778374 is a deficient number, since it is larger than the sum of its proper divisors (38389190).

76778374 is a wasteful number, since it uses less digits than its factorization.

76778374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38389189.

The product of its digits is 1382976, while the sum is 49.

The square root of 76778374 is about 8762.3269740406. The cubic root of 76778374 is about 425.0235262640.

The spelling of 76778374 in words is "seventy-six million, seven hundred seventy-eight thousand, three hundred seventy-four".