78560901 has 8 divisors (see below), whose sum is σ = 116386560. Its totient is φ = 52373916.

The previous prime is 78560897. The next prime is 78560903. The reversal of 78560901 is 10906587.

78560901 is a `hidden beast` number, since 7 + 8 + 560 + 90 + 1 = 666.

It is not a de Polignac number, because 78560901 - 2² = 78560897 is a prime.

It is a super-3 number, since 3×78560901³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78560903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1454805 + ... + 1454858.

It is an arithmetic number, because the mean of its divisors is an integer number (14548320).

Almost surely, 2^78560901 is an apocalyptic number.

It is an amenable number.

78560901 is a deficient number, since it is larger than the sum of its proper divisors (37825659).

78560901 is a wasteful number, since it uses less digits than its factorization.

78560901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2909672 (or 2909666 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 78560901 is about 8863.4587492694. The cubic root of 78560901 is about 428.2875847654.

The spelling of 78560901 in words is "seventy-eight million, five hundred sixty thousand, nine hundred one".