100660501 has 4 divisors (see below), whose sum is σ = 101182252. Its totient is φ = 100138752.

The previous prime is 100660477. The next prime is 100660523. The reversal of 100660501 is 105066001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41293476 + 59367025 = 6426^2 + 7705^2 .

It is a cyclic number.

It is not a de Polignac number, because 100660501 - 2⁹ = 100659989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100660201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260586 + ... + 260971.

It is an arithmetic number, because the mean of its divisors is an integer number (25295563).

Almost surely, 2^100660501 is an apocalyptic number.

It is an amenable number.

100660501 is a deficient number, since it is larger than the sum of its proper divisors (521751).

100660501 is an equidigital number, since it uses as much as digits as its factorization.

100660501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521750.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 100660501 is about 10032.9706966581. The cubic root of 100660501 is about 465.1785663289.

The spelling of 100660501 in words is "one hundred million, six hundred sixty thousand, five hundred one".