770377716 has 60 divisors (see below), whose sum is σ = 2017482852. Its totient is φ = 256338432.

The previous prime is 770377711. The next prime is 770377733. The reversal of 770377716 is 617773077.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 449609616 + 320768100 = 21204^2 + 17910^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770377711) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 216286 + ... + 219818.

Almost surely, 2^770377716 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 770377716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1008741426).

770377716 is an abundant number, since it is smaller than the sum of its proper divisors (1247105136).

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

770377716 is a wasteful number, since it uses less digits than its factorization.

770377716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4222 (or 4211 counting only the distinct ones).

The product of its (nonzero) digits is 302526, while the sum is 45.

The square root of 770377716 is about 27755.6789864705. The cubic root of 770377716 is about 916.7154917171.

The spelling of 770377716 in words is "seven hundred seventy million, three hundred seventy-seven thousand, seven hundred sixteen".