770161660 has 48 divisors (see below), whose sum is σ = 1670054400. Its totient is φ = 298114560.

The previous prime is 770161643. The next prime is 770161673. The reversal of 770161660 is 66161077.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138616 + ... + 144064.

It is an arithmetic number, because the mean of its divisors is an integer number (34792800).

Almost surely, 2^770161660 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 770161660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (835027200).

770161660 is an abundant number, since it is smaller than the sum of its proper divisors (899892740).

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

770161660 is a wasteful number, since it uses less digits than its factorization.

770161660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5686 (or 5684 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 770161660 is about 27751.7866091537. The cubic root of 770161660 is about 916.6297846685.

The spelling of 770161660 in words is "seven hundred seventy million, one hundred sixty-one thousand, six hundred sixty".