16737661 has 2 divisors, whose sum is σ = 16737662. Its totient is φ = 16737660.

The previous prime is 16737649. The next prime is 16737667. The reversal of 16737661 is 16673761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13461561 + 3276100 = 3669^2 + 1810^2 .

It is a cyclic number.

It is not a de Polignac number, because 16737661 - 2¹¹ = 16735613 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16737661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16737667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8368830 + 8368831.

It is an arithmetic number, because the mean of its divisors is an integer number (8368831).

Almost surely, 2^16737661 is an apocalyptic number.

It is an amenable number.

16737661 is a deficient number, since it is larger than the sum of its proper divisors (1).

16737661 is an equidigital number, since it uses as much as digits as its factorization.

16737661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 37.

The square root of 16737661 is about 4091.1686594419. The cubic root of 16737661 is about 255.7986545484.

The spelling of 16737661 in words is "sixteen million, seven hundred thirty-seven thousand, six hundred sixty-one".