743987 has 2 divisors, whose sum is σ = 743988. Its totient is φ = 743986.

The previous prime is 743947. The next prime is 743989. The reversal of 743987 is 789347.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 743987 - 2⁶ = 743923 is a prime.

Together with 743989, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 743987.

It is not a weakly prime, because it can be changed into another prime (743989) 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, 371993 + 371994.

It is an arithmetic number, because the mean of its divisors is an integer number (371994).

2⁷⁴³⁹⁸⁷ is an apocalyptic number.

743987 is a deficient number, since it is larger than the sum of its proper divisors (1).

743987 is an equidigital number, since it uses as much as digits as its factorization.

743987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 38.

The square root of 743987 is about 862.5468103239. The cubic root of 743987 is about 90.6125701541.

The spelling of 743987 in words is "seven hundred forty-three thousand, nine hundred eighty-seven".