864380945 has 8 divisors (see below), whose sum is σ = 1037843880. Its totient is φ = 691113600.

The previous prime is 864380941. The next prime is 864380953. The reversal of 864380945 is 549083468.

It can be written as a sum of positive squares in 4 ways, for example, as 13608721 + 850772224 = 3689^2 + 29168^2 .

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

It is not a de Polignac number, because 864380945 - 2² = 864380941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 864380945.

It is not an unprimeable number, because it can be changed into a prime (864380941) 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, 38990 + ... + 56999.

It is an arithmetic number, because the mean of its divisors is an integer number (129730485).

Almost surely, 2^864380945 is an apocalyptic number.

It is an amenable number.

864380945 is a deficient number, since it is larger than the sum of its proper divisors (173462935).

864380945 is a wasteful number, since it uses less digits than its factorization.

864380945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97795.

The product of its (nonzero) digits is 829440, while the sum is 47.

The square root of 864380945 is about 29400.3562053251. The cubic root of 864380945 is about 952.5805903571.

The spelling of 864380945 in words is "eight hundred sixty-four million, three hundred eighty thousand, nine hundred forty-five".