531720763 has 4 divisors (see below), whose sum is σ = 607680880. Its totient is φ = 455760648.

The previous prime is 531720737. The next prime is 531720809. The reversal of 531720763 is 367027135.

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

It is a de Polignac number, because none of the positive numbers 2^k-531720763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531120763) 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, 37980048 + ... + 37980061.

It is an arithmetic number, because the mean of its divisors is an integer number (151920220).

Almost surely, 2^531720763 is an apocalyptic number.

531720763 is a deficient number, since it is larger than the sum of its proper divisors (75960117).

531720763 is an equidigital number, since it uses as much as digits as its factorization.

531720763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75960116.

The product of its (nonzero) digits is 26460, while the sum is 34.

The square root of 531720763 is about 23059.0711651619. The cubic root of 531720763 is about 810.1421093955.

Adding to 531720763 its reverse (367027135), we get a palindrome (898747898).

The spelling of 531720763 in words is "five hundred thirty-one million, seven hundred twenty thousand, seven hundred sixty-three".