16699601 has 4 divisors (see below), whose sum is σ = 16745472. Its totient is φ = 16653732.

The previous prime is 16699589. The next prime is 16699637. The reversal of 16699601 is 10699661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16699601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16699681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22385 + ... + 23118.

It is an arithmetic number, because the mean of its divisors is an integer number (4186368).

Almost surely, 2^16699601 is an apocalyptic number.

It is an amenable number.

16699601 is a deficient number, since it is larger than the sum of its proper divisors (45871).

16699601 is an equidigital number, since it uses as much as digits as its factorization.

16699601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45870.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 16699601 is about 4086.5145295227. The cubic root of 16699601 is about 255.6046193622.

The spelling of 16699601 in words is "sixteen million, six hundred ninety-nine thousand, six hundred one".