78764495 has 4 divisors (see below), whose sum is σ = 94517400. Its totient is φ = 63011592.

The previous prime is 78764471. The next prime is 78764513. The reversal of 78764495 is 59446787.

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

It is a cyclic number.

It is not a de Polignac number, because 78764495 - 2¹⁰ = 78763471 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7876445 + ... + 7876454.

It is an arithmetic number, because the mean of its divisors is an integer number (23629350).

Almost surely, 2^78764495 is an apocalyptic number.

78764495 is a deficient number, since it is larger than the sum of its proper divisors (15752905).

78764495 is a wasteful number, since it uses less digits than its factorization.

78764495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15752904.

The product of its digits is 1693440, while the sum is 50.

The square root of 78764495 is about 8874.9363377998. The cubic root of 78764495 is about 428.6572409384.

The spelling of 78764495 in words is "seventy-eight million, seven hundred sixty-four thousand, four hundred ninety-five".