770624660 has 96 divisors (see below), whose sum is σ = 1877686272. Its totient is φ = 263324160.

The previous prime is 770624639. The next prime is 770624663. The reversal of 770624660 is 66426077.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770624663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 183302 + ... + 187458.

It is an arithmetic number, because the mean of its divisors is an integer number (19559232).

Almost surely, 2^770624660 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 770624660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (938843136).

770624660 is an abundant number, since it is smaller than the sum of its proper divisors (1107061612).

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

770624660 is a wasteful number, since it uses less digits than its factorization.

770624660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4233 (or 4231 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 770624660 is about 27760.1271610920. The cubic root of 770624660 is about 916.8134320744.

The spelling of 770624660 in words is "seven hundred seventy million, six hundred twenty-four thousand, six hundred sixty".