100640667 has 8 divisors (see below), whose sum is σ = 136387600. Its totient is φ = 65993760.

The previous prime is 100640651. The next prime is 100640671. The reversal of 100640667 is 766046001.

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

It is not a de Polignac number, because 100640667 - 2⁴ = 100640651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100640627) 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, 274792 + ... + 275157.

It is an arithmetic number, because the mean of its divisors is an integer number (17048450).

Almost surely, 2^100640667 is an apocalyptic number.

100640667 is a deficient number, since it is larger than the sum of its proper divisors (35746933).

100640667 is an equidigital number, since it uses as much as digits as its factorization.

100640667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550013.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 100640667 is about 10031.9822069220. The cubic root of 100640667 is about 465.1480116173.

Adding to 100640667 its reverse (766046001), we get a palindrome (866686668).

The spelling of 100640667 in words is "one hundred million, six hundred forty thousand, six hundred sixty-seven".