100640446 has 8 divisors (see below), whose sum is σ = 155830464. Its totient is φ = 48696960.

The previous prime is 100640417. The next prime is 100640447. The reversal of 100640446 is 644046001.

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

It is a self number, because there is not a number n which added to its sum of digits gives 100640446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100640447) 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, 811555 + ... + 811678.

It is an arithmetic number, because the mean of its divisors is an integer number (19478808).

Almost surely, 2^100640446 is an apocalyptic number.

100640446 is a deficient number, since it is larger than the sum of its proper divisors (55190018).

100640446 is a wasteful number, since it uses less digits than its factorization.

100640446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623266.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 100640446 is about 10031.9711921436. The cubic root of 100640446 is about 465.1476711394.

Adding to 100640446 its reverse (644046001), we get a palindrome (744686447).

The spelling of 100640446 in words is "one hundred million, six hundred forty thousand, four hundred forty-six".