77223344 has 20 divisors (see below), whose sum is σ = 163222440. Its totient is φ = 35101440.

The previous prime is 77223337. The next prime is 77223361. The reversal of 77223344 is 44332277.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 77223344.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219209 + ... + 219560.

It is an arithmetic number, because the mean of its divisors is an integer number (8161122).

Almost surely, 2^77223344 is an apocalyptic number.

It is an amenable number.

77223344 is an abundant number, since it is smaller than the sum of its proper divisors (85999096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77223344 is a wasteful number, since it uses less digits than its factorization.

77223344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438788 (or 438782 counting only the distinct ones).

The product of its digits is 28224, while the sum is 32.

The square root of 77223344 is about 8787.6813779290. The cubic root of 77223344 is about 425.8430215034.

It can be divided in two parts, 772233 and 44, that added together give a palindrome (772277).

The spelling of 77223344 in words is "seventy-seven million, two hundred twenty-three thousand, three hundred forty-four".