78414965 has 16 divisors (see below), whose sum is σ = 102850560. Its totient is φ = 57135360.

The previous prime is 78414949. The next prime is 78414967. The reversal of 78414965 is 56941487.

It is not a de Polignac number, because 78414965 - 2⁴ = 78414949 is a prime.

It is a super-2 number, since 2×78414965² = 12297813471902450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78414967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12245 + ... + 17514.

It is an arithmetic number, because the mean of its divisors is an integer number (6428160).

Almost surely, 2^78414965 is an apocalyptic number.

It is an amenable number.

78414965 is a deficient number, since it is larger than the sum of its proper divisors (24435595).

78414965 is a wasteful number, since it uses less digits than its factorization.

78414965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29812.

The product of its digits is 241920, while the sum is 44.

The square root of 78414965 is about 8855.2224703844. Note that the first 3 decimals coincide. The cubic root of 78414965 is about 428.0222224028.

The spelling of 78414965 in words is "seventy-eight million, four hundred fourteen thousand, nine hundred sixty-five".