10691587 has 2 divisors, whose sum is σ = 10691588. Its totient is φ = 10691586.

The previous prime is 10691579. The next prime is 10691591. The reversal of 10691587 is 78519601.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10691587 - 2³ = 10691579 is a prime.

It is a super-2 number, since 2×10691587² = 228620065157138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10691537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5345793 + 5345794.

It is an arithmetic number, because the mean of its divisors is an integer number (5345794).

Almost surely, 2^10691587 is an apocalyptic number.

10691587 is a deficient number, since it is larger than the sum of its proper divisors (1).

10691587 is an equidigital number, since it uses as much as digits as its factorization.

10691587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 10691587 is about 3269.7992293106. The cubic root of 10691587 is about 220.2997772812.

The spelling of 10691587 in words is "ten million, six hundred ninety-one thousand, five hundred eighty-seven".