747506 has 4 divisors (see below), whose sum is σ = 1121262. Its totient is φ = 373752.

The previous prime is 747499. The next prime is 747521. The reversal of 747506 is 605747.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 605747 = 67 ⋅9041.

It can be written as a sum of positive squares in only one way, i.e., 654481 + 93025 = 809^2 + 305^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186875 + ... + 186878.

2⁷⁴⁷⁵⁰⁶ is an apocalyptic number.

747506 is a deficient number, since it is larger than the sum of its proper divisors (373756).

747506 is a wasteful number, since it uses less digits than its factorization.

747506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373755.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 747506 is about 864.5842931722. The cubic root of 747506 is about 90.7552089434.

The spelling of 747506 in words is "seven hundred forty-seven thousand, five hundred six".