866660413 has 8 divisors (see below), whose sum is σ = 873815040. Its totient is φ = 859519200.

The previous prime is 866660407. The next prime is 866660429. The reversal of 866660413 is 314066668.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 866660413 - 2²⁵ = 833105981 is a prime.

It is a super-2 number, since 2×866660413² = 1502200542922661138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866660713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157281 + ... + 162697.

It is an arithmetic number, because the mean of its divisors is an integer number (109226880).

Almost surely, 2^866660413 is an apocalyptic number.

It is an amenable number.

866660413 is a deficient number, since it is larger than the sum of its proper divisors (7154627).

866660413 is a wasteful number, since it uses less digits than its factorization.

866660413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6707.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 866660413 is about 29439.0966743207. The cubic root of 866660413 is about 953.4172087705.

The spelling of 866660413 in words is "eight hundred sixty-six million, six hundred sixty thousand, four hundred thirteen".