770649 has 16 divisors (see below), whose sum is σ = 1136064. Its totient is φ = 464640.

The previous prime is 770647. The next prime is 770657. The reversal of 770649 is 946077.

770649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 770649 - 2¹ = 770647 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (770641) 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, 3897 + ... + 4089.

It is an arithmetic number, because the mean of its divisors is an integer number (71004).

2⁷⁷⁰⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

770649 is a deficient number, since it is larger than the sum of its proper divisors (365415).

770649 is a wasteful number, since it uses less digits than its factorization.

770649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 770649 is about 877.8661629201. The cubic root of 770649 is about 91.6823084419.

The spelling of 770649 in words is "seven hundred seventy thousand, six hundred forty-nine".