16602081 has 16 divisors (see below), whose sum is σ = 24196608. Its totient is φ = 10080000.

The previous prime is 16602059. The next prime is 16602083. The reversal of 16602081 is 18020661.

It is not a de Polignac number, because 16602081 - 2⁵ = 16602049 is a prime.

It is a super-2 number, since 2×16602081² = 551258187061122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16602083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3670 + ... + 6831.

It is an arithmetic number, because the mean of its divisors is an integer number (1512288).

Almost surely, 2^16602081 is an apocalyptic number.

It is an amenable number.

16602081 is a deficient number, since it is larger than the sum of its proper divisors (7594527).

16602081 is a wasteful number, since it uses less digits than its factorization.

16602081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10552.

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

The square root of 16602081 is about 4074.5651301703. The cubic root of 16602081 is about 255.1060996391.

It can be divided in two parts, 1660 and 2081, that added together give a triangular number (3741 = T₈₆).

The spelling of 16602081 in words is "sixteen million, six hundred two thousand, eighty-one".