10408621 has 4 divisors (see below), whose sum is σ = 10416700. Its totient is φ = 10400544.

The previous prime is 10408589. The next prime is 10408649. The reversal of 10408621 is 12680401.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5616900 + 4791721 = 2370^2 + 2189^2 .

It is a cyclic number.

It is not a de Polignac number, because 10408621 - 2⁵ = 10408589 is a prime.

It is a super-2 number, since 2×10408621² = 216678782243282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10408592 and 10408601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10408661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1626 + ... + 4843.

It is an arithmetic number, because the mean of its divisors is an integer number (2604175).

Almost surely, 2^10408621 is an apocalyptic number.

It is an amenable number.

10408621 is a deficient number, since it is larger than the sum of its proper divisors (8079).

10408621 is an equidigital number, since it uses as much as digits as its factorization.

10408621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8078.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 10408621 is about 3226.2394517456. The cubic root of 10408621 is about 218.3388734034.

The spelling of 10408621 in words is "ten million, four hundred eight thousand, six hundred twenty-one".