78712523 has 8 divisors (see below), whose sum is σ = 79634016. Its totient is φ = 77795200.

The previous prime is 78712511. The next prime is 78712531. The reversal of 78712523 is 32521787.

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 78712523 - 2¹⁰ = 78711499 is a prime.

It is a super-2 number, since 2×78712523² = 12391322554051058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78712553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51338 + ... + 52848.

It is an arithmetic number, because the mean of its divisors is an integer number (9954252).

Almost surely, 2^78712523 is an apocalyptic number.

78712523 is a deficient number, since it is larger than the sum of its proper divisors (921493).

78712523 is a wasteful number, since it uses less digits than its factorization.

78712523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085.

The product of its digits is 23520, while the sum is 35.

The square root of 78712523 is about 8872.0078336304. The cubic root of 78712523 is about 428.5629383979.

The spelling of 78712523 in words is "seventy-eight million, seven hundred twelve thousand, five hundred twenty-three".