812077618 has 16 divisors (see below), whose sum is σ = 1359759456. Its totient is φ = 360541440.

The previous prime is 812077601. The next prime is 812077621. The reversal of 812077618 is 816770218.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428271 + ... + 430162.

It is an arithmetic number, because the mean of its divisors is an integer number (84984966).

Almost surely, 2^812077618 is an apocalyptic number.

812077618 is a deficient number, since it is larger than the sum of its proper divisors (547681838).

812077618 is a wasteful number, since it uses less digits than its factorization.

812077618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858489.

The product of its (nonzero) digits is 37632, while the sum is 40.

The square root of 812077618 is about 28496.9755939117. The cubic root of 812077618 is about 932.9660641994.

The spelling of 812077618 in words is "eight hundred twelve million, seventy-seven thousand, six hundred eighteen".