1870864 has 10 divisors (see below), whose sum is σ = 3624830. Its totient is φ = 935424.

The previous prime is 1870861. The next prime is 1870879. The reversal of 1870864 is 4680781.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1710864 + 160000 = 1308^2 + 400^2 .

It is not an unprimeable number, because it can be changed into a prime (1870861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58449 + ... + 58480.

It is an arithmetic number, because the mean of its divisors is an integer number (362483).

2^1870864 is an apocalyptic number.

It is an amenable number.

1870864 is a deficient number, since it is larger than the sum of its proper divisors (1753966).

1870864 is a wasteful number, since it uses less digits than its factorization.

1870864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116937 (or 116931 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 1870864 is about 1367.7953063233. The cubic root of 1870864 is about 123.2198680501.

The spelling of 1870864 in words is "one million, eight hundred seventy thousand, eight hundred sixty-four".