1373864 has 8 divisors (see below), whose sum is σ = 2576010. Its totient is φ = 686928.

The previous prime is 1373861. The next prime is 1373873. The reversal of 1373864 is 4683731.

1373864 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in only one way, i.e., 940900 + 432964 = 970^2 + 658^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1373864.

It is not an unprimeable number, because it can be changed into a prime (1373861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85859 + ... + 85874.

2^1373864 is an apocalyptic number.

It is an amenable number.

1373864 is a deficient number, since it is larger than the sum of its proper divisors (1202146).

1373864 is a wasteful number, since it uses less digits than its factorization.

1373864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171739 (or 171735 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 1373864 is about 1172.1194478380. The cubic root of 1373864 is about 111.1683725591.

The spelling of 1373864 in words is "one million, three hundred seventy-three thousand, eight hundred sixty-four".