100256689 has 8 divisors (see below), whose sum is σ = 108341352. Its totient is φ = 92225280.

The previous prime is 100256677. The next prime is 100256699. The reversal of 100256689 is 986652001.

It can be written as a sum of positive squares in 4 ways, for example, as 45792289 + 54464400 = 6767^2 + 7380^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 100256689 - 2⁵ = 100256657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100256699) 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 in 7 ways as a sum of consecutive naturals, for example, 9352 + ... + 16969.

It is an arithmetic number, because the mean of its divisors is an integer number (13542669).

Almost surely, 2^100256689 is an apocalyptic number.

It is an amenable number.

100256689 is a deficient number, since it is larger than the sum of its proper divisors (8084663).

100256689 is a wasteful number, since it uses less digits than its factorization.

100256689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26627.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 100256689 is about 10012.8262243984. The cubic root of 100256689 is about 464.5556922984. Note that the first 3 decimals are identical.

The spelling of 100256689 in words is "one hundred million, two hundred fifty-six thousand, six hundred eighty-nine".