77223000 has 64 divisors (see below), whose sum is σ = 240945120. Its totient is φ = 20592000.

The previous prime is 77222989. The next prime is 77223017. The reversal of 77223000 is 32277.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9871 + ... + 15870.

Almost surely, 2^77223000 is an apocalyptic number.

It is an amenable number.

77223000 is an abundant number, since it is smaller than the sum of its proper divisors (163722120).

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

77223000 is a wasteful number, since it uses less digits than its factorization.

77223000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25765 (or 25751 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 21.

The square root of 77223000 is about 8787.6618050537. The cubic root of 77223000 is about 425.8423891808.

Adding to 77223000 its reverse (32277), we get a palindrome (77255277).

The spelling of 77223000 in words is "seventy-seven million, two hundred twenty-three thousand".