766547220 has 96 divisors (see below), whose sum is σ = 2250436608. Its totient is φ = 194584192.

The previous prime is 766547219. The next prime is 766547233. The reversal of 766547220 is 22745667.

It is a happy number.

It is a congruent number.

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 in 31 ways as a sum of consecutive naturals, for example, 312037 + ... + 314483.

It is an arithmetic number, because the mean of its divisors is an integer number (23442048).

Almost surely, 2^766547220 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 766547220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1125218304).

766547220 is an abundant number, since it is smaller than the sum of its proper divisors (1483889388).

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

766547220 is a wasteful number, since it uses less digits than its factorization.

766547220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2709 (or 2707 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 39.

The square root of 766547220 is about 27686.5891723773. The cubic root of 766547220 is about 915.1935927679.

The spelling of 766547220 in words is "seven hundred sixty-six million, five hundred forty-seven thousand, two hundred twenty".