16699005 has 24 divisors (see below), whose sum is σ = 30469920. Its totient is φ = 8436960.

The previous prime is 16698977. The next prime is 16699009. The reversal of 16699005 is 50099661.

It is not a de Polignac number, because 16699005 - 2¹⁰ = 16697981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16699009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8911 + ... + 10620.

It is an arithmetic number, because the mean of its divisors is an integer number (1269580).

Almost surely, 2^16699005 is an apocalyptic number.

16699005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16699005 is a deficient number, since it is larger than the sum of its proper divisors (13770915).

16699005 is a wasteful number, since it uses less digits than its factorization.

16699005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19561 (or 19558 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 16699005 is about 4086.4416060920. The cubic root of 16699005 is about 255.6015785277.

The spelling of 16699005 in words is "sixteen million, six hundred ninety-nine thousand, five".