100585861 has 4 divisors (see below), whose sum is σ = 101353824. Its totient is φ = 99817900.

The previous prime is 100585853. The next prime is 100585871. The reversal of 100585861 is 168585001.

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, and also an emirpimes, since its reverse is a distinct semiprime: 168585001 = 13 ⋅12968077.

It is a cyclic number.

It is not a de Polignac number, because 100585861 - 2³ = 100585853 is a prime.

It is a super-2 number, since 2×100585861² = 20235030866222642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100585801) 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, 383785 + ... + 384046.

It is an arithmetic number, because the mean of its divisors is an integer number (25338456).

Almost surely, 2^100585861 is an apocalyptic number.

It is an amenable number.

100585861 is a deficient number, since it is larger than the sum of its proper divisors (767963).

100585861 is an equidigital number, since it uses as much as digits as its factorization.

100585861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767962.

The product of its (nonzero) digits is 9600, while the sum is 34.

The square root of 100585861 is about 10029.2502710821. The cubic root of 100585861 is about 465.0635608956.

The spelling of 100585861 in words is "one hundred million, five hundred eighty-five thousand, eight hundred sixty-one".