866465415 has 12 divisors (see below), whose sum is σ = 1501873464. Its totient is φ = 462114864.

The previous prime is 866465389. The next prime is 866465419. The reversal of 866465415 is 514564668.

866465415 is a `hidden beast` number, since 8 + 66 + 46 + 541 + 5 = 666.

It is not a de Polignac number, because 866465415 - 2⁷ = 866465287 is a prime.

It is a super-2 number, since 2×866465415² = 1501524630782244450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 19254787 = 866465415 / (8 + 6 + 6 + 4 + 6 + 5 + 4 + 1 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866465419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9627349 + ... + 9627438.

It is an arithmetic number, because the mean of its divisors is an integer number (125156122).

Almost surely, 2^866465415 is an apocalyptic number.

866465415 is a deficient number, since it is larger than the sum of its proper divisors (635408049).

866465415 is a wasteful number, since it uses less digits than its factorization.

866465415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19254798 (or 19254795 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 866465415 is about 29435.7845997011. The cubic root of 866465415 is about 953.3456973337.

The spelling of 866465415 in words is "eight hundred sixty-six million, four hundred sixty-five thousand, four hundred fifteen".