8406866615 has 16 divisors (see below), whose sum is σ = 11531069760. Its totient is φ = 5763882240.

The previous prime is 8406866593. The next prime is 8406866669. The reversal of 8406866615 is 5166686048.

It is not a de Polignac number, because 8406866615 - 2¹⁸ = 8406604471 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327881 + ... + 352589.

It is an arithmetic number, because the mean of its divisors is an integer number (720691860).

Almost surely, 2^8406866615 is an apocalyptic number.

8406866615 is a deficient number, since it is larger than the sum of its proper divisors (3124203145).

8406866615 is a wasteful number, since it uses less digits than its factorization.

8406866615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34442.

The product of its (nonzero) digits is 1658880, while the sum is 50.

The square root of 8406866615 is about 91688.9667026519. The cubic root of 8406866615 is about 2033.3464677255.

The spelling of 8406866615 in words is "eight billion, four hundred six million, eight hundred sixty-six thousand, six hundred fifteen".