865464305 has 8 divisors (see below), whose sum is σ = 1099648872. Its totient is φ = 651643648.

The previous prime is 865464277. The next prime is 865464317. The reversal of 865464305 is 503464568.

It can be written as a sum of positive squares in 4 ways, for example, as 456292321 + 409171984 = 21361^2 + 20228^2 .

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 865464305 - 2⁶ = 865464241 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5090882 + ... + 5091051.

It is an arithmetic number, because the mean of its divisors is an integer number (137456109).

Almost surely, 2^865464305 is an apocalyptic number.

865464305 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

865464305 is a deficient number, since it is larger than the sum of its proper divisors (234184567).

865464305 is a wasteful number, since it uses less digits than its factorization.

865464305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10181955.

The product of its (nonzero) digits is 345600, while the sum is 41.

The square root of 865464305 is about 29418.7747025603. The cubic root of 865464305 is about 952.9783921488.

The spelling of 865464305 in words is "eight hundred sixty-five million, four hundred sixty-four thousand, three hundred five".