100663553 has 8 divisors (see below), whose sum is σ = 104664000. Its totient is φ = 96698448.

The previous prime is 100663523. The next prime is 100663561. The reversal of 100663553 is 355366001.

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 100663553 - 2²⁴ = 83886337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100663523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2951 + ... + 14492.

It is an arithmetic number, because the mean of its divisors is an integer number (13083000).

Almost surely, 2^100663553 is an apocalyptic number.

It is an amenable number.

100663553 is a deficient number, since it is larger than the sum of its proper divisors (4000447).

100663553 is a wasteful number, since it uses less digits than its factorization.

100663553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17671.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 100663553 is about 10033.1227940258. The cubic root of 100663553 is about 465.1832676455.

The spelling of 100663553 in words is "one hundred million, six hundred sixty-three thousand, five hundred fifty-three".