16197061 has 4 divisors (see below), whose sum is σ = 16205292. Its totient is φ = 16188832.

The previous prime is 16197047. The next prime is 16197089. The reversal of 16197061 is 16079161.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 12320100 + 3876961 = 3510^2 + 1969^2 .

It is a cyclic number.

It is not a de Polignac number, because 16197061 - 2⁷ = 16196933 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 (16197001) 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, 771 + ... + 5743.

It is an arithmetic number, because the mean of its divisors is an integer number (4051323).

Almost surely, 2^16197061 is an apocalyptic number.

It is an amenable number.

16197061 is a deficient number, since it is larger than the sum of its proper divisors (8231).

16197061 is an equidigital number, since it uses as much as digits as its factorization.

16197061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8230.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 16197061 is about 4024.5572427287. The cubic root of 16197061 is about 253.0144971305.

The spelling of 16197061 in words is "sixteen million, one hundred ninety-seven thousand, sixty-one".