777990465 has 48 divisors (see below), whose sum is σ = 1631829888. Its totient is φ = 334729728.

The previous prime is 777990463. The next prime is 777990469. The reversal of 777990465 is 564099777.

It is a happy number.

777990465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 777990465 - 2¹ = 777990463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (777990463) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67287 + ... + 77996.

It is an arithmetic number, because the mean of its divisors is an integer number (33996456).

Almost surely, 2^777990465 is an apocalyptic number.

It is an amenable number.

777990465 is an abundant number, since it is smaller than the sum of its proper divisors (853839423).

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

777990465 is a wasteful number, since it uses less digits than its factorization.

777990465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145318 (or 145315 counting only the distinct ones).

The product of its (nonzero) digits is 3333960, while the sum is 54.

The square root of 777990465 is about 27892.4804382830. The cubic root of 777990465 is about 919.7252113329.

The spelling of 777990465 in words is "seven hundred seventy-seven million, nine hundred ninety thousand, four hundred sixty-five".