78774903 has 16 divisors (see below), whose sum is σ = 116966400. Its totient is φ = 52398360.

The previous prime is 78774881. The next prime is 78774911. The reversal of 78774903 is 30947787.

It is not a de Polignac number, because 78774903 - 2¹⁰ = 78773879 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9888 + ... + 15978.

It is an arithmetic number, because the mean of its divisors is an integer number (7310400).

Almost surely, 2^78774903 is an apocalyptic number.

78774903 is a deficient number, since it is larger than the sum of its proper divisors (38191497).

78774903 is a wasteful number, since it uses less digits than its factorization.

78774903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6579 (or 6573 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The square root of 78774903 is about 8875.5226888336. The cubic root of 78774903 is about 428.6761211376.

The spelling of 78774903 in words is "seventy-eight million, seven hundred seventy-four thousand, nine hundred three".