16660742 has 16 divisors (see below), whose sum is σ = 28615680. Its totient is φ = 7126728.

The previous prime is 16660729. The next prime is 16660751. The reversal of 16660742 is 24706661.

It is a junction number, because it is equal to n+sod(n) for n = 16660699 and 16660708.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10859 + ... + 12297.

It is an arithmetic number, because the mean of its divisors is an integer number (1788480).

Almost surely, 2^16660742 is an apocalyptic number.

16660742 is a deficient number, since it is larger than the sum of its proper divisors (11954938).

16660742 is a wasteful number, since it uses less digits than its factorization.

16660742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2275.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 16660742 is about 4081.7572196298. The cubic root of 16660742 is about 255.4062063576.

The spelling of 16660742 in words is "sixteen million, six hundred sixty thousand, seven hundred forty-two".