1361864 has 32 divisors (see below), whose sum is σ = 2963520. Its totient is φ = 574656.

The previous prime is 1361849. The next prime is 1361879. The reversal of 1361864 is 4681631.

It is an interprime number because it is at equal distance from previous prime (1361849) and next prime (1361879).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4502 + ... + 4794.

It is an arithmetic number, because the mean of its divisors is an integer number (92610).

2^1361864 is an apocalyptic number.

1361864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1361864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1481760).

1361864 is an abundant number, since it is smaller than the sum of its proper divisors (1601656).

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

1361864 is a wasteful number, since it uses less digits than its factorization.

1361864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 385 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 1361864 is about 1166.9892887255. The cubic root of 1361864 is about 110.8437592971.

The spelling of 1361864 in words is "one million, three hundred sixty-one thousand, eight hundred sixty-four".