1798679 has 2 divisors, whose sum is σ = 1798680. Its totient is φ = 1798678.

The previous prime is 1798649. The next prime is 1798697. The reversal of 1798679 is 9768971.

Together with next prime (1798697) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (9768971) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1798679 - 2¹⁶ = 1733143 is a prime.

It is a super-2 number, since 2×1798679² = 6470492290082, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1798619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 899339 + 899340.

It is an arithmetic number, because the mean of its divisors is an integer number (899340).

2^1798679 is an apocalyptic number.

1798679 is a deficient number, since it is larger than the sum of its proper divisors (1).

1798679 is an equidigital number, since it uses as much as digits as its factorization.

1798679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 47.

The square root of 1798679 is about 1341.1483885089. The cubic root of 1798679 is about 121.6142748924.

The spelling of 1798679 in words is "one million, seven hundred ninety-eight thousand, six hundred seventy-nine".