770745 has 8 divisors (see below), whose sum is σ = 1233216. Its totient is φ = 411056.

The previous prime is 770741. The next prime is 770761. The reversal of 770745 is 547077.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 770745 - 2² = 770741 is a prime.

It is not an unprimeable number, because it can be changed into a prime (770741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25677 + ... + 25706.

It is an arithmetic number, because the mean of its divisors is an integer number (154152).

2⁷⁷⁰⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

770745 is a deficient number, since it is larger than the sum of its proper divisors (462471).

770745 is a wasteful number, since it uses less digits than its factorization.

770745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51391.

The product of its (nonzero) digits is 6860, while the sum is 30.

The square root of 770745 is about 877.9208392560. The cubic root of 770745 is about 91.6861152489.

The spelling of 770745 in words is "seven hundred seventy thousand, seven hundred forty-five".