100640433 has 16 divisors (see below), whose sum is σ = 140507136. Its totient is φ = 63954000.

The previous prime is 100640417. The next prime is 100640447. The reversal of 100640433 is 334046001.

It is not a de Polignac number, because 100640433 - 2⁴ = 100640417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100640483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18808 + ... + 23558.

It is an arithmetic number, because the mean of its divisors is an integer number (8781696).

Almost surely, 2^100640433 is an apocalyptic number.

It is an amenable number.

100640433 is a deficient number, since it is larger than the sum of its proper divisors (39866703).

100640433 is a wasteful number, since it uses less digits than its factorization.

100640433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5084.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 100640433 is about 10031.9705442151. The cubic root of 100640433 is about 465.1476511113.

Adding to 100640433 its reverse (334046001), we get a palindrome (434686434).

The spelling of 100640433 in words is "one hundred million, six hundred forty thousand, four hundred thirty-three".