1375679 has 2 divisors, whose sum is σ = 1375680. Its totient is φ = 1375678.

The previous prime is 1375669. The next prime is 1375681. The reversal of 1375679 is 9765731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1375679 - 2¹² = 1371583 is a prime.

It is a super-2 number, since 2×1375679² = 3784985422082, which contains 22 as substring.

Together with 1375681, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1375609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687839 + 687840.

It is an arithmetic number, because the mean of its divisors is an integer number (687840).

2^1375679 is an apocalyptic number.

1375679 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375679 is an equidigital number, since it uses as much as digits as its factorization.

1375679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39690, while the sum is 38.

The square root of 1375679 is about 1172.8934307941. The cubic root of 1375679 is about 111.2173055464.

The spelling of 1375679 in words is "one million, three hundred seventy-five thousand, six hundred seventy-nine".