78769965 has 8 divisors (see below), whose sum is σ = 126031968. Its totient is φ = 42010640.

The previous prime is 78769949. The next prime is 78769967. The reversal of 78769965 is 56996787.

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

It is not a de Polignac number, because 78769965 - 2⁴ = 78769949 is a prime.

It is a super-2 number, since 2×78769965² = 12409414772202450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78769967) 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, 2625651 + ... + 2625680.

It is an arithmetic number, because the mean of its divisors is an integer number (15753996).

Almost surely, 2^78769965 is an apocalyptic number.

It is an amenable number.

78769965 is a deficient number, since it is larger than the sum of its proper divisors (47262003).

78769965 is a wasteful number, since it uses less digits than its factorization.

78769965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5251339.

The product of its digits is 5715360, while the sum is 57.

The square root of 78769965 is about 8875.2445036743. The cubic root of 78769965 is about 428.6671637716.

The spelling of 78769965 in words is "seventy-eight million, seven hundred sixty-nine thousand, nine hundred sixty-five".