10087621 has 4 divisors (see below), whose sum is σ = 10435500. Its totient is φ = 9739744.

The previous prime is 10087603. The next prime is 10087633. The reversal of 10087621 is 12678001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7214596 + 2873025 = 2686^2 + 1695^2 .

It is a cyclic number.

It is not a de Polignac number, because 10087621 - 2⁹ = 10087109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10087661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173896 + ... + 173953.

It is an arithmetic number, because the mean of its divisors is an integer number (2608875).

Almost surely, 2^10087621 is an apocalyptic number.

It is an amenable number.

10087621 is a deficient number, since it is larger than the sum of its proper divisors (347879).

10087621 is an equidigital number, since it uses as much as digits as its factorization.

10087621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347878.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 10087621 is about 3176.1015411980. The cubic root of 10087621 is about 216.0708857994.

The spelling of 10087621 in words is "ten million, eighty-seven thousand, six hundred twenty-one".