770000664 has 64 divisors (see below), whose sum is σ = 1979964000. Its totient is φ = 249390080.

The previous prime is 770000657. The next prime is 770000687. The reversal of 770000664 is 466000077.

770000664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 263242 + ... + 266150.

Almost surely, 2^770000664 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 770000664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (989982000).

770000664 is an abundant number, since it is smaller than the sum of its proper divisors (1209963336).

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

770000664 is a wasteful number, since it uses less digits than its factorization.

770000664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3228 (or 3224 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 770000664 is about 27748.8858154701. The cubic root of 770000664 is about 916.5659088960.

The spelling of 770000664 in words is "seven hundred seventy million, six hundred sixty-four", and thus it is an aban number.