703643 has 2 divisors, whose sum is σ = 703644. Its totient is φ = 703642.

The previous prime is 703631. The next prime is 703657. The reversal of 703643 is 346307.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 703643 - 2¹⁸ = 441499 is a prime.

It is a super-2 number, since 2×703643² = 990226942898, which contains 22 as substring.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 703643.

It is not a weakly prime, because it can be changed into another prime (703663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 351821 + 351822.

It is an arithmetic number, because the mean of its divisors is an integer number (351822).

2⁷⁰³⁶⁴³ is an apocalyptic number.

703643 is a deficient number, since it is larger than the sum of its proper divisors (1).

703643 is an equidigital number, since it uses as much as digits as its factorization.

703643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 703643 is about 838.8343102187. The cubic root of 703643 is about 88.9441639422.

The spelling of 703643 in words is "seven hundred three thousand, six hundred forty-three".