866951841 has 16 divisors (see below), whose sum is σ = 1343462400. Its totient is φ = 487003728.

The previous prime is 866951837. The next prime is 866951851. The reversal of 866951841 is 148159668.

It is not a de Polignac number, because 866951841 - 2² = 866951837 is a prime.

It is a super-2 number, since 2×866951841² = 1503210989226578562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (866951851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348621 + ... + 351098.

It is an arithmetic number, because the mean of its divisors is an integer number (83966400).

Almost surely, 2^866951841 is an apocalyptic number.

It is an amenable number.

866951841 is a deficient number, since it is larger than the sum of its proper divisors (476510559).

866951841 is a wasteful number, since it uses less digits than its factorization.

866951841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699788.

The product of its digits is 414720, while the sum is 48.

The square root of 866951841 is about 29444.0459346198. The cubic root of 866951841 is about 953.5240639001.

The spelling of 866951841 in words is "eight hundred sixty-six million, nine hundred fifty-one thousand, eight hundred forty-one".