100545689 has 4 divisors (see below), whose sum is σ = 100928256. Its totient is φ = 100163124.

The previous prime is 100545649. The next prime is 100545691. The reversal of 100545689 is 986545001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100545689 - 2¹² = 100541593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100545649) 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, 190889 + ... + 191414.

It is an arithmetic number, because the mean of its divisors is an integer number (25232064).

Almost surely, 2^100545689 is an apocalyptic number.

It is an amenable number.

100545689 is a deficient number, since it is larger than the sum of its proper divisors (382567).

100545689 is an equidigital number, since it uses as much as digits as its factorization.

100545689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382566.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 100545689 is about 10027.2473291527. The cubic root of 100545689 is about 465.0016402609.

The spelling of 100545689 in words is "one hundred million, five hundred forty-five thousand, six hundred eighty-nine".