78608753 has 4 divisors (see below), whose sum is σ = 78664308. Its totient is φ = 78553200.

The previous prime is 78608743. The next prime is 78608759. The reversal of 78608753 is 35780687.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35780687 = 43 ⋅832109.

It can be written as a sum of positive squares in 2 ways, for example, as 70946929 + 7661824 = 8423^2 + 2768^2 .

It is a cyclic number.

It is not a de Polignac number, because 78608753 - 2¹² = 78604657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78608759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25598 + ... + 28503.

It is an arithmetic number, because the mean of its divisors is an integer number (19666077).

Almost surely, 2^78608753 is an apocalyptic number.

It is an amenable number.

78608753 is a deficient number, since it is larger than the sum of its proper divisors (55555).

78608753 is a wasteful number, since it uses less digits than its factorization.

78608753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55554.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 78608753 is about 8866.1577360207. The cubic root of 78608753 is about 428.3745247808.

The spelling of 78608753 in words is "seventy-eight million, six hundred eight thousand, seven hundred fifty-three".