16445797 has 12 divisors (see below), whose sum is σ = 17373636. Its totient is φ = 15557760.

The previous prime is 16445791. The next prime is 16445809. The reversal of 16445797 is 79754461.

It can be written as a sum of positive squares in 6 ways, for example, as 3094081 + 13351716 = 1759^2 + 3654^2 .

It is not a de Polignac number, because 16445797 - 2³ = 16445789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16445791) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55983 + ... + 56275.

It is an arithmetic number, because the mean of its divisors is an integer number (1447803).

Almost surely, 2^16445797 is an apocalyptic number.

It is an amenable number.

16445797 is a deficient number, since it is larger than the sum of its proper divisors (927839).

16445797 is an equidigital number, since it uses as much as digits as its factorization.

16445797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408 (or 371 counting only the distinct ones).

The product of its digits is 211680, while the sum is 43.

The square root of 16445797 is about 4055.3417858425. The cubic root of 16445797 is about 254.3030926226.

The spelling of 16445797 in words is "sixteen million, four hundred forty-five thousand, seven hundred ninety-seven".