866149704 has 48 divisors (see below), whose sum is σ = 2680941120. Its totient is φ = 247471200.

The previous prime is 866149693. The next prime is 866149721. The reversal of 866149704 is 407941668.

It is a self number, because there is not a number n which added to its sum of digits gives 866149704.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 858772 + ... + 859779.

It is an arithmetic number, because the mean of its divisors is an integer number (55852940).

Almost surely, 2^866149704 is an apocalyptic number.

866149704 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

866149704 is an abundant number, since it is smaller than the sum of its proper divisors (1814791416).

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

866149704 is a wasteful number, since it uses less digits than its factorization.

866149704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718570 (or 1718563 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 866149704 is about 29430.4214037108. The cubic root of 866149704 is about 953.2298941785.

The spelling of 866149704 in words is "eight hundred sixty-six million, one hundred forty-nine thousand, seven hundred four".