16616474 has 16 divisors (see below), whose sum is σ = 29092608. Its totient is φ = 6969552.

The previous prime is 16616473. The next prime is 16616489. The reversal of 16616474 is 47461661.

It is a super-2 number, since 2×16616474² = 552214416385352, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16616473) by changing a digit.

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, 11969 + ... + 13284.

It is an arithmetic number, because the mean of its divisors is an integer number (1818288).

Almost surely, 2^16616474 is an apocalyptic number.

16616474 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16616474 is a deficient number, since it is larger than the sum of its proper divisors (12476134).

16616474 is a wasteful number, since it uses less digits than its factorization.

16616474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25309.

The product of its digits is 24192, while the sum is 35.

The square root of 16616474 is about 4076.3309482916. The cubic root of 16616474 is about 255.1797988648.

The spelling of 16616474 in words is "sixteen million, six hundred sixteen thousand, four hundred seventy-four".