10071621 has 48 divisors (see below), whose sum is σ = 17891328. Its totient is φ = 5540400.

The previous prime is 10071617. The next prime is 10071623. The reversal of 10071621 is 12617001.

10071621 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10071621 - 2² = 10071617 is a prime.

10071621 is strictly pandigital in base 8.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10071594 and 10071603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10071623) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52636 + ... + 52826.

It is an arithmetic number, because the mean of its divisors is an integer number (372736).

Almost surely, 2^10071621 is an apocalyptic number.

It is an amenable number.

10071621 is a deficient number, since it is larger than the sum of its proper divisors (7819707).

10071621 is an equidigital number, since it uses as much as digits as its factorization.

10071621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 10071621 is about 3173.5817304743. The cubic root of 10071621 is about 215.9565884980.

Adding to 10071621 its reverse (12617001), we get a palindrome (22688622).

It can be divided in two parts, 1007 and 1621, that added together give a triangular number (2628 = T₇₂).

The spelling of 10071621 in words is "ten million, seventy-one thousand, six hundred twenty-one".