1375747 has 2 divisors, whose sum is σ = 1375748. Its totient is φ = 1375746.

The previous prime is 1375739. The next prime is 1375757. The reversal of 1375747 is 7475731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1375747 - 2³ = 1375739 is a prime.

It is not a weakly prime, because it can be changed into another prime (1375727) 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, 687873 + 687874.

It is an arithmetic number, because the mean of its divisors is an integer number (687874).

2^1375747 is an apocalyptic number.

1375747 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375747 is an equidigital number, since it uses as much as digits as its factorization.

1375747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20580, while the sum is 34.

The square root of 1375747 is about 1172.9224185768. The cubic root of 1375747 is about 111.2191380117.

The spelling of 1375747 in words is "one million, three hundred seventy-five thousand, seven hundred forty-seven".