764095220 has 54 divisors (see below), whose sum is σ = 1868691762. Its totient is φ = 261678816.

The previous prime is 764095217. The next prime is 764095231. The reversal of 764095220 is 22590467.

It can be written as a sum of positive squares in only one way, i.e., 611276176 + 152819044 = 24724^2 + 12362^2 .

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 864899 + ... + 865781.

It is an arithmetic number, because the mean of its divisors is an integer number (34605403).

Almost surely, 2^764095220 is an apocalyptic number.

764095220 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 764095220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (934345881).

764095220 is an abundant number, since it is smaller than the sum of its proper divisors (1104596542).

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

764095220 is an equidigital number, since it uses as much as digits as its factorization.

764095220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1789 (or 897 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 764095220 is about 27642.2723378524. The cubic root of 764095220 is about 914.2167224493.

The spelling of 764095220 in words is "seven hundred sixty-four million, ninety-five thousand, two hundred twenty".