78411465 has 24 divisors (see below), whose sum is σ = 148269888. Its totient is φ = 38017440.

The previous prime is 78411409. The next prime is 78411469. The reversal of 78411465 is 56411487.

It is a happy number.

It is not a de Polignac number, because 78411465 - 2⁶ = 78411401 is a prime.

It is a super-2 number, since 2×78411465² = 12296715686892450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78411469) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78709 + ... + 79698.

It is an arithmetic number, because the mean of its divisors is an integer number (6177912).

Almost surely, 2^78411465 is an apocalyptic number.

It is an amenable number.

78411465 is a deficient number, since it is larger than the sum of its proper divisors (69858423).

78411465 is a wasteful number, since it uses less digits than its factorization.

78411465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158429 (or 158426 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 78411465 is about 8855.0248446856. The cubic root of 78411465 is about 428.0158541453.

The spelling of 78411465 in words is "seventy-eight million, four hundred eleven thousand, four hundred sixty-five".