764245 has 8 divisors (see below), whose sum is σ = 921816. Its totient is φ = 608256.

The previous prime is 764233. The next prime is 764249. The reversal of 764245 is 542467.

It can be written as a sum of positive squares in 4 ways, for example, as 2116 + 762129 = 46^2 + 873^2 .

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 764245 - 2¹³ = 756053 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764249) 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, 1549 + ... + 1981.

It is an arithmetic number, because the mean of its divisors is an integer number (115227).

2⁷⁶⁴²⁴⁵ is an apocalyptic number.

It is an amenable number.

764245 is a deficient number, since it is larger than the sum of its proper divisors (157571).

764245 is a wasteful number, since it uses less digits than its factorization.

764245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791.

The product of its digits is 6720, while the sum is 28.

The square root of 764245 is about 874.2110729109. The cubic root of 764245 is about 91.4276454287.

The spelling of 764245 in words is "seven hundred sixty-four thousand, two hundred forty-five".