776532645 has 72 divisors (see below), whose sum is σ = 1584981216. Its totient is φ = 350626752.

The previous prime is 776532643. The next prime is 776532649. The reversal of 776532645 is 546235677.

776532645 is a `hidden beast` number, since 7 + 76 + 532 + 6 + 45 = 666.

776532645 is digitally balanced in base 2 and base 6, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 776532645 - 2¹ = 776532643 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 776532645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (776532643) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 180894 + ... + 185136.

It is an arithmetic number, because the mean of its divisors is an integer number (22013628).

Almost surely, 2^776532645 is an apocalyptic number.

It is an amenable number.

776532645 is an abundant number, since it is smaller than the sum of its proper divisors (808448571).

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

776532645 is a wasteful number, since it uses less digits than its factorization.

776532645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4351 (or 4341 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 45.

The square root of 776532645 is about 27866.3353349521. The cubic root of 776532645 is about 919.1503833142.

The spelling of 776532645 in words is "seven hundred seventy-six million, five hundred thirty-two thousand, six hundred forty-five".