766503320 has 128 divisors (see below), whose sum is σ = 1993593600. Its totient is φ = 262310400.

The previous prime is 766503253. The next prime is 766503341. The reversal of 766503320 is 23305667.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2315555 + ... + 2315885.

It is an arithmetic number, because the mean of its divisors is an integer number (15574950).

Almost surely, 2^766503320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 766503320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (996796800).

766503320 is an abundant number, since it is smaller than the sum of its proper divisors (1227090280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

766503320 is a wasteful number, since it uses less digits than its factorization.

766503320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 645 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 32.

The square root of 766503320 is about 27685.7963584218. The cubic root of 766503320 is about 915.1761214520.

Adding to 766503320 its reverse (23305667), we get a palindrome (789808987).

The spelling of 766503320 in words is "seven hundred sixty-six million, five hundred three thousand, three hundred twenty".