749503 has 4 divisors (see below), whose sum is σ = 753088. Its totient is φ = 745920.

The previous prime is 749471. The next prime is 749543. The reversal of 749503 is 305947.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 749503 - 2⁵ = 749471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749543) 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, 1458 + ... + 1903.

It is an arithmetic number, because the mean of its divisors is an integer number (188272).

2⁷⁴⁹⁵⁰³ is an apocalyptic number.

749503 is a deficient number, since it is larger than the sum of its proper divisors (3585).

749503 is a wasteful number, since it uses less digits than its factorization.

749503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3584.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 749503 is about 865.7384131480. The cubic root of 749503 is about 90.8359561195.

Subtracting from 749503 its reverse (305947), we obtain a square (443556 = 666²).

The spelling of 749503 in words is "seven hundred forty-nine thousand, five hundred three".