764561361 has 8 divisors (see below), whose sum is σ = 1041105024. Its totient is φ = 498862640.

The previous prime is 764561359. The next prime is 764561363. The reversal of 764561361 is 163165467.

764561361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (764561359) and next prime (764561363).

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

It is a cyclic number.

It is not a de Polignac number, because 764561361 - 2¹ = 764561359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (764561363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2711070 + ... + 2711351.

It is an arithmetic number, because the mean of its divisors is an integer number (130138128).

Almost surely, 2^764561361 is an apocalyptic number.

It is an amenable number.

764561361 is a deficient number, since it is larger than the sum of its proper divisors (276543663).

764561361 is a wasteful number, since it uses less digits than its factorization.

764561361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5422471.

The product of its digits is 90720, while the sum is 39.

The square root of 764561361 is about 27650.7027216308. The cubic root of 764561361 is about 914.4025925068.

It can be divided in two parts, 7645 and 61361, that added together give a triangular number (69006 = T₃₇₁).

The spelling of 764561361 in words is "seven hundred sixty-four million, five hundred sixty-one thousand, three hundred sixty-one".