1865061 has 12 divisors (see below), whose sum is σ = 2939040. Its totient is φ = 1130280.

The previous prime is 1865057. The next prime is 1865063. The reversal of 1865061 is 1605681.

1865061 is a `hidden beast` number, since 1 + 8 + 650 + 6 + 1 = 666.

It is not a de Polignac number, because 1865061 - 2² = 1865057 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1865063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9321 + ... + 9518.

It is an arithmetic number, because the mean of its divisors is an integer number (244920).

2^1865061 is an apocalyptic number.

1865061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1865061 is a deficient number, since it is larger than the sum of its proper divisors (1073979).

1865061 is a wasteful number, since it uses less digits than its factorization.

1865061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18856 (or 18853 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1865061 is about 1365.6723618789. The cubic root of 1865061 is about 123.0923359804.

The spelling of 1865061 in words is "one million, eight hundred sixty-five thousand, sixty-one".