77118290 has 16 divisors (see below), whose sum is σ = 146978712. Its totient is φ = 29032704.

The previous prime is 77118289. The next prime is 77118311. The reversal of 77118290 is 9281177.

It can be written as a sum of positive squares in 4 ways, for example, as 75047569 + 2070721 = 8663^2 + 1439^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 77118290.

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 7 ways as a sum of consecutive naturals, for example, 226649 + ... + 226988.

Almost surely, 2^77118290 is an apocalyptic number.

77118290 is a deficient number, since it is larger than the sum of its proper divisors (69860422).

77118290 is a wasteful number, since it uses less digits than its factorization.

77118290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453661.

The product of its (nonzero) digits is 7056, while the sum is 35.

The square root of 77118290 is about 8781.7019990432. The cubic root of 77118290 is about 425.6498294270.

The spelling of 77118290 in words is "seventy-seven million, one hundred eighteen thousand, two hundred ninety".