78299085 has 24 divisors (see below), whose sum is σ = 126894240. Its totient is φ = 41227648.

The previous prime is 78299047. The next prime is 78299099. The reversal of 78299085 is 58099287.

It is a happy number.

It is not a de Polignac number, because 78299085 - 2⁶ = 78299021 is a prime.

It is a super-2 number, since 2×78299085² = 12261493423674450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118486 + ... + 119144.

It is an arithmetic number, because the mean of its divisors is an integer number (5287260).

Almost surely, 2^78299085 is an apocalyptic number.

It is an amenable number.

78299085 is a deficient number, since it is larger than the sum of its proper divisors (48595155).

78299085 is an equidigital number, since it uses as much as digits as its factorization.

78299085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845 (or 756 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 48.

The square root of 78299085 is about 8848.6770197584. The cubic root of 78299085 is about 427.8112776873.

The spelling of 78299085 in words is "seventy-eight million, two hundred ninety-nine thousand, eighty-five".