1361580 has 48 divisors (see below), whose sum is σ = 4161024. Its totient is φ = 329920.

The previous prime is 1361573. The next prime is 1361587. The reversal of 1361580 is 851631.

It is an interprime number because it is at equal distance from previous prime (1361573) and next prime (1361587).

It is a self number, because there is not a number n which added to its sum of digits gives 1361580.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372 + ... + 1691.

It is an arithmetic number, because the mean of its divisors is an integer number (86688).

2^1361580 is an apocalyptic number.

1361580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1361580 is an abundant number, since it is smaller than the sum of its proper divisors (2799444).

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

1361580 is a wasteful number, since it uses less digits than its factorization.

1361580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086 (or 2084 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1361580 is about 1166.8676017441. The cubic root of 1361580 is about 110.8360537269.

It can be divided in two parts, 13615 and 80, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 1361580 in words is "one million, three hundred sixty-one thousand, five hundred eighty".