764045 has 4 divisors (see below), whose sum is σ = 916860. Its totient is φ = 611232.

The previous prime is 764041. The next prime is 764051. The reversal of 764045 is 540467.

764045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540467 = 43 ⋅12569.

It can be written as a sum of positive squares in 2 ways, for example, as 264196 + 499849 = 514^2 + 707^2 .

It is a cyclic number.

It is not a de Polignac number, because 764045 - 2² = 764041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76400 + ... + 76409.

It is an arithmetic number, because the mean of its divisors is an integer number (229215).

2⁷⁶⁴⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

764045 is a deficient number, since it is larger than the sum of its proper divisors (152815).

764045 is a wasteful number, since it uses less digits than its factorization.

764045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152814.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 764045 is about 874.0966765753. The cubic root of 764045 is about 91.4196693109.

The spelling of 764045 in words is "seven hundred sixty-four thousand, forty-five".