77223345 has 16 divisors (see below), whose sum is σ = 123771840. Its totient is φ = 41114304.

The previous prime is 77223337. The next prime is 77223361. The reversal of 77223345 is 54332277.

It is not a de Polignac number, because 77223345 - 2³ = 77223337 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 15 ways as a sum of consecutive naturals, for example, 5127 + ... + 13443.

It is an arithmetic number, because the mean of its divisors is an integer number (7735740).

Almost surely, 2^77223345 is an apocalyptic number.

It is an amenable number.

77223345 is a deficient number, since it is larger than the sum of its proper divisors (46548495).

77223345 is a wasteful number, since it uses less digits than its factorization.

77223345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8944.

The product of its digits is 35280, while the sum is 33.

The square root of 77223345 is about 8787.6814348268. The cubic root of 77223345 is about 425.8430233416.

The spelling of 77223345 in words is "seventy-seven million, two hundred twenty-three thousand, three hundred forty-five".