16590649 has 2 divisors, whose sum is σ = 16590650. Its totient is φ = 16590648.

The previous prime is 16590619. The next prime is 16590653. The reversal of 16590649 is 94609561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16548624 + 42025 = 4068^2 + 205^2 .

It is a cyclic number.

It is not a de Polignac number, because 16590649 - 2⁵ = 16590617 is a prime.

It is not a weakly prime, because it can be changed into another prime (16590619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8295324 + 8295325.

It is an arithmetic number, because the mean of its divisors is an integer number (8295325).

Almost surely, 2^16590649 is an apocalyptic number.

It is an amenable number.

16590649 is a deficient number, since it is larger than the sum of its proper divisors (1).

16590649 is an equidigital number, since it uses as much as digits as its factorization.

16590649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 16590649 is about 4073.1620394971. The cubic root of 16590649 is about 255.0475318290.

The spelling of 16590649 in words is "sixteen million, five hundred ninety thousand, six hundred forty-nine".