866660414 has 16 divisors (see below), whose sum is σ = 1369353600. Its totient is φ = 410240664.

The previous prime is 866660407. The next prime is 866660429. The reversal of 866660414 is 414066668.

It is a super-2 number, since 2×866660414² = 1502200546389302792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54479 + ... + 68565.

It is an arithmetic number, because the mean of its divisors is an integer number (85584600).

Almost surely, 2^866660414 is an apocalyptic number.

866660414 is a deficient number, since it is larger than the sum of its proper divisors (502693186).

866660414 is a wasteful number, since it uses less digits than its factorization.

866660414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15727.

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 866660414 is about 29439.0966913049. The cubic root of 866660414 is about 953.4172091372.

The spelling of 866660414 in words is "eight hundred sixty-six million, six hundred sixty thousand, four hundred fourteen".