100640783 has 2 divisors, whose sum is σ = 100640784. Its totient is φ = 100640782.

The previous prime is 100640779. The next prime is 100640803. The reversal of 100640783 is 387046001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100640783 - 2² = 100640779 is a prime.

It is a zygodrome in base 4.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100640483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50320391 + 50320392.

It is an arithmetic number, because the mean of its divisors is an integer number (50320392).

Almost surely, 2^100640783 is an apocalyptic number.

100640783 is a deficient number, since it is larger than the sum of its proper divisors (1).

100640783 is an equidigital number, since it uses as much as digits as its factorization.

100640783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 100640783 is about 10031.9879884298. The cubic root of 100640783 is about 465.1481903296.

Adding to 100640783 its reverse (387046001), we get a palindrome (487686784).

The spelling of 100640783 in words is "one hundred million, six hundred forty thousand, seven hundred eighty-three".