16261633 has 2 divisors, whose sum is σ = 16261634. Its totient is φ = 16261632.

The previous prime is 16261607. The next prime is 16261649. The reversal of 16261633 is 33616261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14348944 + 1912689 = 3788^2 + 1383^2 .

It is a cyclic number.

It is not a de Polignac number, because 16261633 - 2⁹ = 16261121 is a prime.

It is not a weakly prime, because it can be changed into another prime (16261733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8130816 + 8130817.

It is an arithmetic number, because the mean of its divisors is an integer number (8130817).

Almost surely, 2^16261633 is an apocalyptic number.

It is an amenable number.

16261633 is a deficient number, since it is larger than the sum of its proper divisors (1).

16261633 is an equidigital number, since it uses as much as digits as its factorization.

16261633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 28.

The square root of 16261633 is about 4032.5715120751. The cubic root of 16261633 is about 253.3502779909.

Adding to 16261633 its reverse (33616261), we get a palindrome (49877894).

The spelling of 16261633 in words is "sixteen million, two hundred sixty-one thousand, six hundred thirty-three".