865941020 has 24 divisors (see below), whose sum is σ = 2078258784. Its totient is φ = 296894016.

The previous prime is 865941001. The next prime is 865941023. The reversal of 865941020 is 20149568.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865941023) 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, 3092507 + ... + 3092786.

It is an arithmetic number, because the mean of its divisors is an integer number (86594116).

Almost surely, 2^865941020 is an apocalyptic number.

It is an amenable number.

865941020 is an abundant number, since it is smaller than the sum of its proper divisors (1212317764).

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

865941020 is a wasteful number, since it uses less digits than its factorization.

865941020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6185309 (or 6185307 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 865941020 is about 29426.8758110677. The cubic root of 865941020 is about 953.1533332006.

The spelling of 865941020 in words is "eight hundred sixty-five million, nine hundred forty-one thousand, twenty".