770660 has 48 divisors (see below), whose sum is σ = 1838592. Its totient is φ = 268800.

The previous prime is 770657. The next prime is 770663. The reversal of 770660 is 66077.

It is an interprime number because it is at equal distance from previous prime (770657) and next prime (770663).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6764 + ... + 6876.

It is an arithmetic number, because the mean of its divisors is an integer number (38304).

2⁷⁷⁰⁶⁶⁰ 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 770660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (919296).

770660 is an abundant number, since it is smaller than the sum of its proper divisors (1067932).

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

770660 is a wasteful number, since it uses less digits than its factorization.

770660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 770660 is about 877.8724280896. The cubic root of 770660 is about 91.6827446546.

The spelling of 770660 in words is "seven hundred seventy thousand, six hundred sixty".