77223070 has 32 divisors (see below), whose sum is σ = 144099648. Its totient is φ = 29772288.

The previous prime is 77223031. The next prime is 77223071. The reversal of 77223070 is 7032277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77223071) by changing a digit.

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, 40887 + ... + 42733.

It is an arithmetic number, because the mean of its divisors is an integer number (4503114).

Almost surely, 2^77223070 is an apocalyptic number.

77223070 is a deficient number, since it is larger than the sum of its proper divisors (66876578).

77223070 is a wasteful number, since it uses less digits than its factorization.

77223070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004.

The product of its (nonzero) digits is 4116, while the sum is 28.

The square root of 77223070 is about 8787.6657879098. The cubic root of 77223070 is about 425.8425178512.

The spelling of 77223070 in words is "seventy-seven million, two hundred twenty-three thousand, seventy".