10621187 has 2 divisors, whose sum is σ = 10621188. Its totient is φ = 10621186.

The previous prime is 10621181. The next prime is 10621211. The reversal of 10621187 is 78112601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10621187 - 2⁶ = 10621123 is a prime.

It is a super-2 number, since 2×10621187² = 225619226577938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10621181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5310593 + 5310594.

It is an arithmetic number, because the mean of its divisors is an integer number (5310594).

Almost surely, 2^10621187 is an apocalyptic number.

10621187 is a deficient number, since it is larger than the sum of its proper divisors (1).

10621187 is an equidigital number, since it uses as much as digits as its factorization.

10621187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 10621187 is about 3259.0162626167. The cubic root of 10621187 is about 219.8151822472.

Adding to 10621187 its reverse (78112601), we get a palindrome (88733788).

The spelling of 10621187 in words is "ten million, six hundred twenty-one thousand, one hundred eighty-seven".