78413697 has 8 divisors (see below), whose sum is σ = 116168480. Its totient is φ = 52275780.

The previous prime is 78413677. The next prime is 78413701. The reversal of 78413697 is 79631487.

It is not a de Polignac number, because 78413697 - 2⁸ = 78413441 is a prime.

It is a super-2 number, since 2×78413697² = 12297415754415618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78413617) 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, 1452079 + ... + 1452132.

It is an arithmetic number, because the mean of its divisors is an integer number (14521060).

Almost surely, 2^78413697 is an apocalyptic number.

It is an amenable number.

78413697 is a deficient number, since it is larger than the sum of its proper divisors (37754783).

78413697 is a wasteful number, since it uses less digits than its factorization.

78413697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2904220 (or 2904214 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 78413697 is about 8855.1508739264. The cubic root of 78413697 is about 428.0199152960.

The spelling of 78413697 in words is "seventy-eight million, four hundred thirteen thousand, six hundred ninety-seven".