764447265 has 12 divisors (see below), whose sum is σ = 1325042004. Its totient is φ = 407705184.

The previous prime is 764447263. The next prime is 764447291. The reversal of 764447265 is 562744467.

It can be written as a sum of positive squares in 2 ways, for example, as 306530064 + 457917201 = 17508^2 + 21399^2 .

It is not a de Polignac number, because 764447265 - 2¹ = 764447263 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 16987717 = 764447265 / (7 + 6 + 4 + 4 + 4 + 7 + 2 + 6 + 5).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 764447265.

It is not an unprimeable number, because it can be changed into a prime (764447261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8493814 + ... + 8493903.

It is an arithmetic number, because the mean of its divisors is an integer number (110420167).

Almost surely, 2^764447265 is an apocalyptic number.

It is an amenable number.

764447265 is a deficient number, since it is larger than the sum of its proper divisors (560594739).

764447265 is a wasteful number, since it uses less digits than its factorization.

764447265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16987728 (or 16987725 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 45.

The square root of 764447265 is about 27648.6394782817. The cubic root of 764447265 is about 914.3571046085.

The spelling of 764447265 in words is "seven hundred sixty-four million, four hundred forty-seven thousand, two hundred sixty-five".