16611066 has 24 divisors (see below), whose sum is σ = 36350964. Its totient is φ = 5481600.

The previous prime is 16611059. The next prime is 16611097. The reversal of 16611066 is 66011661.

It can be written as a sum of positive squares in 2 ways, for example, as 16573041 + 38025 = 4071^2 + 195^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2751 + ... + 6386.

Almost surely, 2^16611066 is an apocalyptic number.

16611066 is an abundant number, since it is smaller than the sum of its proper divisors (19739898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16611066 is a wasteful number, since it uses less digits than its factorization.

16611066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9246 (or 9243 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 16611066 is about 4075.6675526839. The cubic root of 16611066 is about 255.1521122430.

It can be divided in two parts, 166110 and 66, that added together give a triangular number (166176 = T₅₇₆).

The spelling of 16611066 in words is "sixteen million, six hundred eleven thousand, sixty-six".