78413806 has 8 divisors (see below), whose sum is σ = 118942560. Its totient is φ = 38766288.

The previous prime is 78413801. The next prime is 78413827. The reversal of 78413806 is 60831487.

It is a happy number.

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

It is a super-2 number, since 2×78413806² = 12297449942811272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78413801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220086 + ... + 220441.

It is an arithmetic number, because the mean of its divisors is an integer number (14867820).

Almost surely, 2^78413806 is an apocalyptic number.

78413806 is a deficient number, since it is larger than the sum of its proper divisors (40528754).

78413806 is a wasteful number, since it uses less digits than its factorization.

78413806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440618.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 78413806 is about 8855.1570285343. The cubic root of 78413806 is about 428.0201136208.

The spelling of 78413806 in words is "seventy-eight million, four hundred thirteen thousand, eight hundred six".