16980077 has 4 divisors (see below), whose sum is σ = 17439036. Its totient is φ = 16521120.

The previous prime is 16980037. The next prime is 16980083. The reversal of 16980077 is 77008961.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77008961 = 2251 ⋅34211.

It can be written as a sum of positive squares in 2 ways, for example, as 12773476 + 4206601 = 3574^2 + 2051^2 .

It is a cyclic number.

It is not a de Polignac number, because 16980077 - 2¹⁸ = 16717933 is a prime.

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 16980077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16980017) 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, 229424 + ... + 229497.

It is an arithmetic number, because the mean of its divisors is an integer number (4359759).

Almost surely, 2^16980077 is an apocalyptic number.

It is an amenable number.

16980077 is a deficient number, since it is larger than the sum of its proper divisors (458959).

16980077 is an equidigital number, since it uses as much as digits as its factorization.

16980077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458958.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 16980077 is about 4120.6888987158. The cubic root of 16980077 is about 257.0276734421.

The spelling of 16980077 in words is "sixteen million, nine hundred eighty thousand, seventy-seven".