3791865 has 64 divisors (see below), whose sum is σ = 7833600. Its totient is φ = 1552320.

The previous prime is 3791863. The next prime is 3791873. The reversal of 3791865 is 5681973.

It is not a de Polignac number, because 3791865 - 2¹ = 3791863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3791861) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 56562 + ... + 56628.

It is an arithmetic number, because the mean of its divisors is an integer number (122400).

Almost surely, 2^3791865 is an apocalyptic number.

3791865 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3791865 is an abundant number, since it is smaller than the sum of its proper divisors (4041735).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3791865 is a wasteful number, since it uses less digits than its factorization.

3791865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 93 counting only the distinct ones).

The product of its digits is 45360, while the sum is 39.

The square root of 3791865 is about 1947.2711675573. The cubic root of 3791865 is about 155.9376394404.

It can be divided in two parts, 3791 and 865, that added together give a triangular number (4656 = T₉₆).

The spelling of 3791865 in words is "three million, seven hundred ninety-one thousand, eight hundred sixty-five".