78774367 has 8 divisors (see below), whose sum is σ = 90208800. Its totient is φ = 67385184.

The previous prime is 78774347. The next prime is 78774383. The reversal of 78774367 is 76347787.

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 78774367 - 2²³ = 70385759 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78774367.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78774307) 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, 7492 + ... + 14617.

It is an arithmetic number, because the mean of its divisors is an integer number (11276100).

Almost surely, 2^78774367 is an apocalyptic number.

78774367 is a deficient number, since it is larger than the sum of its proper divisors (11434433).

78774367 is a wasteful number, since it uses less digits than its factorization.

78774367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22625.

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

The square root of 78774367 is about 8875.4924933775. The cubic root of 78774367 is about 428.6751488698.

The spelling of 78774367 in words is "seventy-eight million, seven hundred seventy-four thousand, three hundred sixty-seven".