777868090 has 8 divisors (see below), whose sum is σ = 1400162580. Its totient is φ = 311147232.

The previous prime is 777868087. The next prime is 777868097. The reversal of 777868090 is 90868777.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 775566801 + 2301289 = 27849^2 + 1517^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (777868097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38893395 + ... + 38893414.

Almost surely, 2^777868090 is an apocalyptic number.

777868090 is a deficient number, since it is larger than the sum of its proper divisors (622294490).

777868090 is a wasteful number, since it uses less digits than its factorization.

777868090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77786816.

The product of its (nonzero) digits is 1185408, while the sum is 52.

The square root of 777868090 is about 27890.2866604128. The cubic root of 777868090 is about 919.6769856885.

The spelling of 777868090 in words is "seven hundred seventy-seven million, eight hundred sixty-eight thousand, ninety".