16699917 has 32 divisors (see below), whose sum is σ = 26091520. Its totient is φ = 9408960.

The previous prime is 16699901. The next prime is 16700003. The reversal of 16699917 is 71999661.

It is not a de Polignac number, because 16699917 - 2⁴ = 16699901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16699217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22608 + ... + 23334.

It is an arithmetic number, because the mean of its divisors is an integer number (815360).

Almost surely, 2^16699917 is an apocalyptic number.

It is an amenable number.

16699917 is a deficient number, since it is larger than the sum of its proper divisors (9391603).

16699917 is a wasteful number, since it uses less digits than its factorization.

16699917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793.

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

The square root of 16699917 is about 4086.5531930956. The cubic root of 16699917 is about 255.6062315873.

The spelling of 16699917 in words is "sixteen million, six hundred ninety-nine thousand, nine hundred seventeen".