1369864 has 8 divisors (see below), whose sum is σ = 2568510. Its totient is φ = 684928.

The previous prime is 1369861. The next prime is 1369871. The reversal of 1369864 is 4689631.

It can be written as a sum of positive squares in only one way, i.e., 1340964 + 28900 = 1158^2 + 170^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1369861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85609 + ... + 85624.

2^1369864 is an apocalyptic number.

It is an amenable number.

1369864 is a deficient number, since it is larger than the sum of its proper divisors (1198646).

1369864 is a wasteful number, since it uses less digits than its factorization.

1369864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171239 (or 171235 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 1369864 is about 1170.4118933094. The cubic root of 1369864 is about 111.0603789138.

It can be divided in two parts, 136 and 9864, that added together give a 4-th power (10000 = 10⁴).

The spelling of 1369864 in words is "one million, three hundred sixty-nine thousand, eight hundred sixty-four".