16344691 has 8 divisors (see below), whose sum is σ = 18265968. Its totient is φ = 14496000.

The previous prime is 16344683. The next prime is 16344703. The reversal of 16344691 is 19644361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16344691 - 2³ = 16344683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16344611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17670 + ... + 18571.

It is an arithmetic number, because the mean of its divisors is an integer number (2283246).

Almost surely, 2^16344691 is an apocalyptic number.

16344691 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16344691 is a deficient number, since it is larger than the sum of its proper divisors (1921277).

16344691 is a wasteful number, since it uses less digits than its factorization.

16344691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36293.

The product of its digits is 15552, while the sum is 34.

The square root of 16344691 is about 4042.8567869763. The cubic root of 16344691 is about 253.7808834259.

The spelling of 16344691 in words is "sixteen million, three hundred forty-four thousand, six hundred ninety-one".