101669587 has 4 divisors (see below), whose sum is σ = 104034040. Its totient is φ = 99305136.

The previous prime is 101669543. The next prime is 101669597. The reversal of 101669587 is 785966101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 785966101 = 47 ⋅16722683.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101669587 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 2364409 = 101669587 / (1 + 0 + 1 + 6 + 6 + 9 + 5 + 8 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101669597) 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, 1182162 + ... + 1182247.

It is an arithmetic number, because the mean of its divisors is an integer number (26008510).

Almost surely, 2^101669587 is an apocalyptic number.

101669587 is the 5822-nd hex number.

101669587 is a deficient number, since it is larger than the sum of its proper divisors (2364453).

101669587 is an equidigital number, since it uses as much as digits as its factorization.

101669587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2364452.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 101669587 is about 10083.1337886592. The cubic root of 101669587 is about 466.7278178935.

The spelling of 101669587 in words is "one hundred one million, six hundred sixty-nine thousand, five hundred eighty-seven".