15706961 has 2 divisors, whose sum is σ = 15706962. Its totient is φ = 15706960.

The previous prime is 15706949. The next prime is 15706967. The reversal of 15706961 is 16960751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10042561 + 5664400 = 3169^2 + 2380^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15706961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15706967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7853480 + 7853481.

It is an arithmetic number, because the mean of its divisors is an integer number (7853481).

Almost surely, 2^15706961 is an apocalyptic number.

It is an amenable number.

15706961 is a deficient number, since it is larger than the sum of its proper divisors (1).

15706961 is an equidigital number, since it uses as much as digits as its factorization.

15706961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 15706961 is about 3963.2008528461. The cubic root of 15706961 is about 250.4363632387.

The spelling of 15706961 in words is "fifteen million, seven hundred six thousand, nine hundred sixty-one".