816255345 has 32 divisors (see below), whose sum is σ = 1337720832. Its totient is φ = 424820672.

The previous prime is 816255317. The next prime is 816255353. The reversal of 816255345 is 543552618.

It is a cyclic number.

It is not a de Polignac number, because 816255345 - 2⁵ = 816255313 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 268504 + ... + 271526.

It is an arithmetic number, because the mean of its divisors is an integer number (41803776).

Almost surely, 2^816255345 is an apocalyptic number.

It is an amenable number.

816255345 is a deficient number, since it is larger than the sum of its proper divisors (521465487).

816255345 is a wasteful number, since it uses less digits than its factorization.

816255345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3461.

The product of its digits is 144000, while the sum is 39.

The square root of 816255345 is about 28570.1827960551. The cubic root of 816255345 is about 934.5632073831.

The spelling of 816255345 in words is "eight hundred sixteen million, two hundred fifty-five thousand, three hundred forty-five".