764481 has 4 divisors (see below), whose sum is σ = 1019312. Its totient is φ = 509652.

The previous prime is 764471. The next prime is 764501. The reversal of 764481 is 184467.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 764481 - 2¹⁰ = 763457 is a prime.

It is a super-2 number, since 2×764481² = 1168862398722, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 764481.

It is not an unprimeable number, because it can be changed into a prime (764431) 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, 127411 + ... + 127416.

It is an arithmetic number, because the mean of its divisors is an integer number (254828).

2⁷⁶⁴⁴⁸¹ is an apocalyptic number.

It is an amenable number.

764481 is a deficient number, since it is larger than the sum of its proper divisors (254831).

764481 is a wasteful number, since it uses less digits than its factorization.

764481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254830.

The product of its digits is 5376, while the sum is 30.

The square root of 764481 is about 874.3460413360. The cubic root of 764481 is about 91.4370554581.

The spelling of 764481 in words is "seven hundred sixty-four thousand, four hundred eighty-one".