78774983 has 8 divisors (see below), whose sum is σ = 90113568. Its totient is φ = 67457664.

The previous prime is 78774967. The next prime is 78775009. The reversal of 78774983 is 38947787.

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

It is a cyclic number.

It is not a de Polignac number, because 78774983 - 2⁴ = 78774967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78774953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3635 + ... + 13067.

It is an arithmetic number, because the mean of its divisors is an integer number (11264196).

Almost surely, 2^78774983 is an apocalyptic number.

78774983 is a deficient number, since it is larger than the sum of its proper divisors (11338585).

78774983 is a wasteful number, since it uses less digits than its factorization.

78774983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10633.

The product of its digits is 2370816, while the sum is 53.

The square root of 78774983 is about 8875.5271956093. The cubic root of 78774983 is about 428.6762662519.

The spelling of 78774983 in words is "seventy-eight million, seven hundred seventy-four thousand, nine hundred eighty-three".