100663240 has 16 divisors (see below), whose sum is σ = 226492380. Its totient is φ = 40265280.

The previous prime is 100663229. The next prime is 100663243. The reversal of 100663240 is 42366001.

It can be written as a sum of positive squares in 2 ways, for example, as 92968164 + 7695076 = 9642^2 + 2774^2 .

It is not an unprimeable number, because it can be changed into a prime (100663243) 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, 1258251 + ... + 1258330.

Almost surely, 2^100663240 is an apocalyptic number.

100663240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100663240 is an abundant number, since it is smaller than the sum of its proper divisors (125829140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100663240 is a wasteful number, since it uses less digits than its factorization.

100663240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2516592 (or 2516588 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 100663240 is about 10033.1071956797. The cubic root of 100663240 is about 465.1827855030.

It can be divided in two parts, 1006 and 63240, that added together give a palindrome (64246).

The spelling of 100663240 in words is "one hundred million, six hundred sixty-three thousand, two hundred forty".