866464244 has 12 divisors (see below), whose sum is σ = 1516527264. Its totient is φ = 433170744.

The previous prime is 866464169. The next prime is 866464253. The reversal of 866464244 is 442464668.

It is a super-2 number, since 2×866464244² = 1501520572260983072, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 866464195 and 866464204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34169 + ... + 53855.

It is an arithmetic number, because the mean of its divisors is an integer number (126377272).

Almost surely, 2^866464244 is an apocalyptic number.

It is an amenable number.

866464244 is a deficient number, since it is larger than the sum of its proper divisors (650063020).

866464244 is a wasteful number, since it uses less digits than its factorization.

866464244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30694 (or 30692 counting only the distinct ones).

The product of its digits is 884736, while the sum is 44.

The square root of 866464244 is about 29435.7647089387. The cubic root of 866464244 is about 953.3452678615.

The spelling of 866464244 in words is "eight hundred sixty-six million, four hundred sixty-four thousand, two hundred forty-four".