865520248 has 32 divisors (see below), whose sum is σ = 1677312000. Its totient is φ = 418272480.

The previous prime is 865520221. The next prime is 865520267. The reversal of 865520248 is 842025568.

It is a self number, because there is not a number n which added to its sum of digits gives 865520248.

It is a congruent 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, 255993 + ... + 259351.

It is an arithmetic number, because the mean of its divisors is an integer number (52416000).

Almost surely, 2^865520248 is an apocalyptic number.

It is an amenable number.

865520248 is a deficient number, since it is larger than the sum of its proper divisors (811791752).

865520248 is a wasteful number, since it uses less digits than its factorization.

865520248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4435 (or 4431 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 40.

The square root of 865520248 is about 29419.7254915813. The cubic root of 865520248 is about 952.9989249893.

The spelling of 865520248 in words is "eight hundred sixty-five million, five hundred twenty thousand, two hundred forty-eight".