10691537 has 2 divisors, whose sum is σ = 10691538. Its totient is φ = 10691536.

The previous prime is 10691533. The next prime is 10691539. The reversal of 10691537 is 73519601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9709456 + 982081 = 3116^2 + 991^2 .

It is a cyclic number.

It is not a de Polignac number, because 10691537 - 2² = 10691533 is a prime.

It is a super-2 number, since 2×10691537² = 228617926844738, which contains 22 as substring.

Together with 10691539, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10691533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5345768 + 5345769.

It is an arithmetic number, because the mean of its divisors is an integer number (5345769).

Almost surely, 2^10691537 is an apocalyptic number.

It is an amenable number.

10691537 is a deficient number, since it is larger than the sum of its proper divisors (1).

10691537 is an equidigital number, since it uses as much as digits as its factorization.

10691537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 10691537 is about 3269.7915835723. The cubic root of 10691537 is about 220.2994338645.

The spelling of 10691537 in words is "ten million, six hundred ninety-one thousand, five hundred thirty-seven".