15990701 has 2 divisors, whose sum is σ = 15990702. Its totient is φ = 15990700.

The previous prime is 15990679. The next prime is 15990731. The reversal of 15990701 is 10709951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15792676 + 198025 = 3974^2 + 445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15990701 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15990731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7995350 + 7995351.

It is an arithmetic number, because the mean of its divisors is an integer number (7995351).

Almost surely, 2^15990701 is an apocalyptic number.

It is an amenable number.

15990701 is a deficient number, since it is larger than the sum of its proper divisors (1).

15990701 is an equidigital number, since it uses as much as digits as its factorization.

15990701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2835, while the sum is 32.

The square root of 15990701 is about 3998.8374560614. The cubic root of 15990701 is about 251.9353838277.

The spelling of 15990701 in words is "fifteen million, nine hundred ninety thousand, seven hundred one".