10027861 has 4 divisors (see below), whose sum is σ = 10036224. Its totient is φ = 10019500.

The previous prime is 10027837. The next prime is 10027867. The reversal of 10027861 is 16872001.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 16872001 = 109 ⋅154789.

It is a cyclic number.

It is not a de Polignac number, because 10027861 - 2¹⁵ = 9995093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10027867) 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, 2005 + ... + 4906.

It is an arithmetic number, because the mean of its divisors is an integer number (2509056).

Almost surely, 2^10027861 is an apocalyptic number.

It is an amenable number.

10027861 is a deficient number, since it is larger than the sum of its proper divisors (8363).

10027861 is an equidigital number, since it uses as much as digits as its factorization.

10027861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8362.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 10027861 is about 3166.6798069903. The cubic root of 10027861 is about 215.6433658235.

Adding to 10027861 its reverse (16872001), we get a palindrome (26899862).

The spelling of 10027861 in words is "ten million, twenty-seven thousand, eight hundred sixty-one".