865416020 has 48 divisors (see below), whose sum is σ = 2082073728. Its totient is φ = 295989120.

The previous prime is 865415983. The next prime is 865416031. The reversal of 865416020 is 20614568.

865416020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51599 + ... + 66281.

It is an arithmetic number, because the mean of its divisors is an integer number (43376536).

Almost surely, 2^865416020 is an apocalyptic number.

It is an amenable number.

865416020 is an abundant number, since it is smaller than the sum of its proper divisors (1216657708).

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

865416020 is a wasteful number, since it uses less digits than its factorization.

865416020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15120 (or 15118 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 865416020 is about 29417.9540417073. The cubic root of 865416020 is about 952.9606693237.

The spelling of 865416020 in words is "eight hundred sixty-five million, four hundred sixteen thousand, twenty".