100663145 has 32 divisors (see below), whose sum is σ = 136304640. Its totient is φ = 70741440.

The previous prime is 100663141. The next prime is 100663153. The reversal of 100663145 is 541366001.

It is not a de Polignac number, because 100663145 - 2² = 100663141 is a prime.

It is a super-2 number, since 2×100663145² = 20266137522582050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100663141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217184 + ... + 217646.

It is an arithmetic number, because the mean of its divisors is an integer number (4259520).

Almost surely, 2^100663145 is an apocalyptic number.

It is an amenable number.

100663145 is a deficient number, since it is larger than the sum of its proper divisors (35641495).

100663145 is a wasteful number, since it uses less digits than its factorization.

100663145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 100663145 is about 10033.1024613526. The cubic root of 100663145 is about 465.1826391657.

The spelling of 100663145 in words is "one hundred million, six hundred sixty-three thousand, one hundred forty-five".