770045 has 8 divisors (see below), whose sum is σ = 928824. Its totient is φ = 612864.

The previous prime is 770041. The next prime is 770047. The reversal of 770045 is 540077.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 120409 + 649636 = 347^2 + 806^2 .

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 770045 - 2² = 770041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 770045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770041) 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 7 ways as a sum of consecutive naturals, for example, 1457 + ... + 1913.

It is an arithmetic number, because the mean of its divisors is an integer number (116103).

2⁷⁷⁰⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

770045 is a deficient number, since it is larger than the sum of its proper divisors (158779).

770045 is a wasteful number, since it uses less digits than its factorization.

770045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799.

The product of its (nonzero) digits is 980, while the sum is 23.

The square root of 770045 is about 877.5220794943. The cubic root of 770045 is about 91.6583500260.

The spelling of 770045 in words is "seven hundred seventy thousand, forty-five".