16612069 has 4 divisors (see below), whose sum is σ = 16884460. Its totient is φ = 16339680.

The previous prime is 16612039. The next prime is 16612081. The reversal of 16612069 is 96021661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96021661 = 17 ⋅5648333.

It can be written as a sum of positive squares in 2 ways, for example, as 1127844 + 15484225 = 1062^2 + 3935^2 .

It is a cyclic number.

It is not a de Polignac number, because 16612069 - 2¹¹ = 16610021 is a prime.

It is a super-2 number, since 2×16612069² = 551921672921522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16612069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16612039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136104 + ... + 136225.

It is an arithmetic number, because the mean of its divisors is an integer number (4221115).

Almost surely, 2^16612069 is an apocalyptic number.

It is an amenable number.

16612069 is a deficient number, since it is larger than the sum of its proper divisors (272391).

16612069 is an equidigital number, since it uses as much as digits as its factorization.

16612069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272390.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 16612069 is about 4075.7905981539. The cubic root of 16612069 is about 255.1572476232.

The spelling of 16612069 in words is "sixteen million, six hundred twelve thousand, sixty-nine".