764449 has 6 divisors (see below), whose sum is σ = 889314. Its totient is φ = 655200.

The previous prime is 764447. The next prime is 764459. The reversal of 764449 is 944467.

It can be written as a sum of positive squares in only one way, i.e., 753424 + 11025 = 868^2 + 105^2 .

It is not a de Polignac number, because 764449 - 2¹ = 764447 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (764447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7752 + ... + 7849.

It is an arithmetic number, because the mean of its divisors is an integer number (148219).

2⁷⁶⁴⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

764449 is a deficient number, since it is larger than the sum of its proper divisors (124865).

764449 is a wasteful number, since it uses less digits than its factorization.

764449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15615 (or 15608 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 764449 is about 874.3277417536. The cubic root of 764449 is about 91.4357796354.

The spelling of 764449 in words is "seven hundred sixty-four thousand, four hundred forty-nine".