16780606 has 4 divisors (see below), whose sum is σ = 25170912. Its totient is φ = 8390302.

The previous prime is 16780601. The next prime is 16780607. The reversal of 16780606 is 60608761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60608761 = 73 ⋅830257.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16780601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4195150 + ... + 4195153.

It is an arithmetic number, because the mean of its divisors is an integer number (6292728).

Almost surely, 2^16780606 is an apocalyptic number.

16780606 is a deficient number, since it is larger than the sum of its proper divisors (8390306).

16780606 is an equidigital number, since it uses as much as digits as its factorization.

16780606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8390305.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 16780606 is about 4096.4137974575. The cubic root of 16780606 is about 256.0172412704.

The spelling of 16780606 in words is "sixteen million, seven hundred eighty thousand, six hundred six".