999166017 has 16 divisors (see below), whose sum is σ = 1388933568. Its totient is φ = 638339520.

The previous prime is 999166013. The next prime is 999166037. The reversal of 999166017 is 710661999.

It is not a de Polignac number, because 999166017 - 2² = 999166013 is a prime.

It is not an unprimeable number, because it can be changed into a prime (999166013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66234 + ... + 79907.

It is an arithmetic number, because the mean of its divisors is an integer number (86808348).

Almost surely, 2^999166017 is an apocalyptic number.

It is an amenable number.

999166017 is a deficient number, since it is larger than the sum of its proper divisors (389767551).

999166017 is a wasteful number, since it uses less digits than its factorization.

999166017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146240.

The product of its (nonzero) digits is 183708, while the sum is 48.

The square root of 999166017 is about 31609.5874221730. The cubic root of 999166017 is about 999.7219283500.

The spelling of 999166017 in words is "nine hundred ninety-nine million, one hundred sixty-six thousand, seventeen".