865917552 has 40 divisors (see below), whose sum is σ = 2354690560. Its totient is φ = 273447360.

The previous prime is 865917529. The next prime is 865917557. The reversal of 865917552 is 255719568.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865917557) 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, 473824 + ... + 475647.

It is an arithmetic number, because the mean of its divisors is an integer number (58867264).

Almost surely, 2^865917552 is an apocalyptic number.

It is an amenable number.

865917552 is an abundant number, since it is smaller than the sum of its proper divisors (1488773008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

865917552 is a wasteful number, since it uses less digits than its factorization.

865917552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949501 (or 949495 counting only the distinct ones).

The product of its digits is 756000, while the sum is 48.

The square root of 865917552 is about 29426.4770572354. The cubic root of 865917552 is about 953.1447226047.

The spelling of 865917552 in words is "eight hundred sixty-five million, nine hundred seventeen thousand, five hundred fifty-two".