16020861 has 4 divisors (see below), whose sum is σ = 21361152. Its totient is φ = 10680572.

The previous prime is 16020841. The next prime is 16020869. The reversal of 16020861 is 16802061.

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 not a de Polignac number, because 16020861 - 2⁷ = 16020733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16020869) 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, 2670141 + ... + 2670146.

It is an arithmetic number, because the mean of its divisors is an integer number (5340288).

Almost surely, 2^16020861 is an apocalyptic number.

It is an amenable number.

16020861 is a deficient number, since it is larger than the sum of its proper divisors (5340291).

16020861 is an equidigital number, since it uses as much as digits as its factorization.

16020861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5340290.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 16020861 is about 4002.6067755901. The cubic root of 16020861 is about 252.0936758060.

The spelling of 16020861 in words is "sixteen million, twenty thousand, eight hundred sixty-one".