78768969 has 8 divisors (see below), whose sum is σ = 105110880. Its totient is φ = 52469856.

The previous prime is 78768961. The next prime is 78768979. The reversal of 78768969 is 96986787.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78768969 - 2³ = 78768961 is a prime.

It is a super-2 number, since 2×78768969² = 12409100954645922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78768961) 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, 6124 + ... + 13965.

It is an arithmetic number, because the mean of its divisors is an integer number (13138860).

Almost surely, 2^78768969 is an apocalyptic number.

It is an amenable number.

78768969 is a deficient number, since it is larger than the sum of its proper divisors (26341911).

78768969 is a wasteful number, since it uses less digits than its factorization.

78768969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21399.

The product of its digits is 9144576, while the sum is 60.

The square root of 78768969 is about 8875.1883923667. The cubic root of 78768969 is about 428.6653570157.

The spelling of 78768969 in words is "seventy-eight million, seven hundred sixty-eight thousand, nine hundred sixty-nine".