1375648 has 12 divisors (see below), whose sum is σ = 2708370. Its totient is φ = 687808.

The previous prime is 1375639. The next prime is 1375669. The reversal of 1375648 is 8465731.

It can be written as a sum of positive squares in only one way, i.e., 1192464 + 183184 = 1092^2 + 428^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 1 + 3¹¹ + 7⁷ + 5⁷ + 6⁷ + 4⁷ + 8³ .

It is an unprimeable number.

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, 21463 + ... + 21526.

2^1375648 is an apocalyptic number.

It is an amenable number.

1375648 is a deficient number, since it is larger than the sum of its proper divisors (1332722).

1375648 is an equidigital number, since it uses as much as digits as its factorization.

1375648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42999 (or 42991 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 1375648 is about 1172.8802155378. The cubic root of 1375648 is about 111.2164701378.

The spelling of 1375648 in words is "one million, three hundred seventy-five thousand, six hundred forty-eight".