717994 has 8 divisors (see below), whose sum is σ = 1088388. Its totient is φ = 355200.

The previous prime is 717989. The next prime is 718007. The reversal of 717994 is 499717.

It can be written as a sum of positive squares in 2 ways, for example, as 714025 + 3969 = 845^2 + 63^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×717994⁴ (a number of 25 digits) contains 4444 as substring.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1657 + ... + 2044.

2⁷¹⁷⁹⁹⁴ is an apocalyptic number.

717994 is a deficient number, since it is larger than the sum of its proper divisors (370394).

717994 is a wasteful number, since it uses less digits than its factorization.

717994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3800.

The product of its digits is 15876, while the sum is 37.

The square root of 717994 is about 847.3452661106. The cubic root of 717994 is about 89.5447795642.

It can be divided in two parts, 717 and 994, that added together give a triangular number (1711 = T₅₈).

The spelling of 717994 in words is "seven hundred seventeen thousand, nine hundred ninety-four".