78335568 has 30 divisors (see below), whose sum is σ = 219231194. Its totient is φ = 26111808.

The previous prime is 78335563. The next prime is 78335573. The reversal of 78335568 is 86553387.

78335568 is a `hidden beast` number, since 7 + 83 + 3 + 5 + 568 = 666.

It is an interprime number because it is at equal distance from previous prime (78335563) and next prime (78335573).

It can be written as a sum of positive squares in only one way, i.e., 61591104 + 16744464 = 7848^2 + 4092^2 .

It is a super-2 number, since 2×78335568² = 12272922427765248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78335561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 271855 + ... + 272142.

Almost surely, 2^78335568 is an apocalyptic number.

It is an amenable number.

78335568 is an abundant number, since it is smaller than the sum of its proper divisors (140895626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78335568 is a wasteful number, since it uses less digits than its factorization.

78335568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544011 (or 544002 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 78335568 is about 8850.7382742910. The cubic root of 78335568 is about 427.8777127563.

The spelling of 78335568 in words is "seventy-eight million, three hundred thirty-five thousand, five hundred sixty-eight".