706503 has 16 divisors (see below), whose sum is σ = 1140480. Its totient is φ = 379776.

The previous prime is 706499. The next prime is 706507. The reversal of 706503 is 305607.

It is an interprime number because it is at equal distance from previous prime (706499) and next prime (706507).

It is not a de Polignac number, because 706503 - 2² = 706499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 706503.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 706503.

It is not an unprimeable number, because it can be changed into a prime (706507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 633 + ... + 1346.

It is an arithmetic number, because the mean of its divisors is an integer number (71280).

2⁷⁰⁶⁵⁰³ is an apocalyptic number.

706503 is a deficient number, since it is larger than the sum of its proper divisors (433977).

706503 is a wasteful number, since it uses less digits than its factorization.

706503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 706503 is about 840.5373281419. The cubic root of 706503 is about 89.0645073724.

The spelling of 706503 in words is "seven hundred six thousand, five hundred three".