78358855 has 16 divisors (see below), whose sum is σ = 97542144. Its totient is φ = 60366240.

The previous prime is 78358843. The next prime is 78358867. The reversal of 78358855 is 55885387.

It is an interprime number because it is at equal distance from previous prime (78358843) and next prime (78358867).

It is not a de Polignac number, because 78358855 - 2⁷ = 78358727 is a prime.

It is a super-2 number, since 2×78358855² = 12280220313822050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78358799 and 78358808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33432 + ... + 35698.

It is an arithmetic number, because the mean of its divisors is an integer number (6096384).

Almost surely, 2^78358855 is an apocalyptic number.

78358855 is a deficient number, since it is larger than the sum of its proper divisors (19183289).

78358855 is a wasteful number, since it uses less digits than its factorization.

78358855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2526.

The product of its digits is 1344000, while the sum is 49.

The square root of 78358855 is about 8852.0537165112. The cubic root of 78358855 is about 427.9201072964.

The spelling of 78358855 in words is "seventy-eight million, three hundred fifty-eight thousand, eight hundred fifty-five".