101890669 has 4 divisors (see below), whose sum is σ = 102424320. Its totient is φ = 101357020.

The previous prime is 101890661. The next prime is 101890687. The reversal of 101890669 is 966098101.

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 101890669 - 2³ = 101890661 is a prime.

It is a super-2 number, since 2×101890669² = 20763416858535122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101890661) 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, 266539 + ... + 266920.

It is an arithmetic number, because the mean of its divisors is an integer number (25606080).

Almost surely, 2^101890669 is an apocalyptic number.

It is an amenable number.

101890669 is a deficient number, since it is larger than the sum of its proper divisors (533651).

101890669 is an equidigital number, since it uses as much as digits as its factorization.

101890669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533650.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 101890669 is about 10094.0907961044. The cubic root of 101890669 is about 467.0658751244.

The spelling of 101890669 in words is "one hundred one million, eight hundred ninety thousand, six hundred sixty-nine".