10621563 has 4 divisors (see below), whose sum is σ = 14162088. Its totient is φ = 7081040.

The previous prime is 10621547. The next prime is 10621579. The reversal of 10621563 is 36512601.

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

It is an interprime number because it is at equal distance from previous prime (10621547) and next prime (10621579).

It is a cyclic number.

It is not a de Polignac number, because 10621563 - 2⁴ = 10621547 is a prime.

It is a super-2 number, since 2×10621563² = 225635201125938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10621063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1770258 + ... + 1770263.

It is an arithmetic number, because the mean of its divisors is an integer number (3540522).

Almost surely, 2^10621563 is an apocalyptic number.

10621563 is a deficient number, since it is larger than the sum of its proper divisors (3540525).

10621563 is an equidigital number, since it uses as much as digits as its factorization.

10621563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3540524.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 10621563 is about 3259.0739482252. The cubic root of 10621563 is about 219.8177761046.

The spelling of 10621563 in words is "ten million, six hundred twenty-one thousand, five hundred sixty-three".