703993 has 4 divisors (see below), whose sum is σ = 706420. Its totient is φ = 701568.

The previous prime is 703991. The next prime is 704003. The reversal of 703993 is 399307.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 399307 = 419 ⋅953.

It can be written as a sum of positive squares in 2 ways, for example, as 419904 + 284089 = 648^2 + 533^2 .

It is a cyclic number.

It is not a de Polignac number, because 703993 - 2¹ = 703991 is a prime.

It is a super-2 number, since 2×703993² = 991212288098, which contains 22 as substring.

It is a Duffinian number.

703993 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (703991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 708 + ... + 1381.

It is an arithmetic number, because the mean of its divisors is an integer number (176605).

2⁷⁰³⁹⁹³ is an apocalyptic number.

It is an amenable number.

703993 is a deficient number, since it is larger than the sum of its proper divisors (2427).

703993 is a wasteful number, since it uses less digits than its factorization.

703993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426.

The product of its (nonzero) digits is 5103, while the sum is 31.

The square root of 703993 is about 839.0429071269. The cubic root of 703993 is about 88.9589087760.

The spelling of 703993 in words is "seven hundred three thousand, nine hundred ninety-three".