16699477 has 2 divisors, whose sum is σ = 16699478. Its totient is φ = 16699476.

The previous prime is 16699451. The next prime is 16699481. The reversal of 16699477 is 77499661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10982596 + 5716881 = 3314^2 + 2391^2 .

It is a cyclic number.

It is not a de Polignac number, because 16699477 - 2¹⁹ = 16175189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16699477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16699427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8349738 + 8349739.

It is an arithmetic number, because the mean of its divisors is an integer number (8349739).

Almost surely, 2^16699477 is an apocalyptic number.

It is an amenable number.

16699477 is a deficient number, since it is larger than the sum of its proper divisors (1).

16699477 is an equidigital number, since it uses as much as digits as its factorization.

16699477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 49.

The square root of 16699477 is about 4086.4993576410. The cubic root of 16699477 is about 255.6039867113.

The spelling of 16699477 in words is "sixteen million, six hundred ninety-nine thousand, four hundred seventy-seven".