16616679 has 4 divisors (see below), whose sum is σ = 22155576. Its totient is φ = 11077784.

The previous prime is 16616669. The next prime is 16616693. The reversal of 16616679 is 97661661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97661661 = 3 ⋅32553887.

It is a cyclic number.

It is not a de Polignac number, because 16616679 - 2⁵ = 16616647 is a prime.

It is a super-2 number, since 2×16616679² = 552228041978082, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16616679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16616609) 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, 2769444 + ... + 2769449.

It is an arithmetic number, because the mean of its divisors is an integer number (5538894).

Almost surely, 2^16616679 is an apocalyptic number.

16616679 is a deficient number, since it is larger than the sum of its proper divisors (5538897).

16616679 is an equidigital number, since it uses as much as digits as its factorization.

16616679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5538896.

The product of its digits is 81648, while the sum is 42.

The square root of 16616679 is about 4076.3560933756. The cubic root of 16616679 is about 255.1808482580.

The spelling of 16616679 in words is "sixteen million, six hundred sixteen thousand, six hundred seventy-nine".