754991 has 2 divisors, whose sum is σ = 754992. Its totient is φ = 754990.

The previous prime is 754981. The next prime is 754993. The reversal of 754991 is 199457.

It is a strong prime.

It is an emirp because it is prime and its reverse (199457) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-754991 is a prime.

It is a super-2 number, since 2×754991² = 1140022820162, which contains 22 as substring.

Together with 754993, 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 (754993) 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, 377495 + 377496.

It is an arithmetic number, because the mean of its divisors is an integer number (377496).

2⁷⁵⁴⁹⁹¹ is an apocalyptic number.

754991 is a deficient number, since it is larger than the sum of its proper divisors (1).

754991 is an equidigital number, since it uses as much as digits as its factorization.

754991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 35.

The square root of 754991 is about 868.9021809157. The cubic root of 754991 is about 91.0571230931.

The spelling of 754991 in words is "seven hundred fifty-four thousand, nine hundred ninety-one".