10644557 has 8 divisors (see below), whose sum is σ = 13271232. Its totient is φ = 8294400.

The previous prime is 10644523. The next prime is 10644559. The reversal of 10644557 is 75544601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10644557 - 2¹⁴ = 10628173 is a prime.

It is a super-2 number, since 2×10644557² = 226613187452498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10644559) 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 7 ways as a sum of consecutive naturals, for example, 69044 + ... + 69197.

It is an arithmetic number, because the mean of its divisors is an integer number (1658904).

Almost surely, 2^10644557 is an apocalyptic number.

It is an amenable number.

10644557 is a deficient number, since it is larger than the sum of its proper divisors (2626675).

10644557 is a wasteful number, since it uses less digits than its factorization.

10644557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138259.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 10644557 is about 3262.5997302765. The cubic root of 10644557 is about 219.9762853226.

The spelling of 10644557 in words is "ten million, six hundred forty-four thousand, five hundred fifty-seven".