78752079 has 24 divisors (see below), whose sum is σ = 132213120. Its totient is φ = 44236368.

The previous prime is 78752057. The next prime is 78752099. The reversal of 78752079 is 97025787.

It is not a de Polignac number, because 78752079 - 2¹⁷ = 78621007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78752099) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6877 + ... + 14310.

It is an arithmetic number, because the mean of its divisors is an integer number (5508880).

Almost surely, 2^78752079 is an apocalyptic number.

78752079 is a deficient number, since it is larger than the sum of its proper divisors (53461041).

78752079 is a wasteful number, since it uses less digits than its factorization.

78752079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21259 (or 21256 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 45.

The square root of 78752079 is about 8874.2368122560. The cubic root of 78752079 is about 428.6347160348.

The spelling of 78752079 in words is "seventy-eight million, seven hundred fifty-two thousand, seventy-nine".