766481 has 4 divisors (see below), whose sum is σ = 772464. Its totient is φ = 760500.

The previous prime is 766477. The next prime is 766487. The reversal of 766481 is 184667.

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 a cyclic number.

It is not a de Polignac number, because 766481 - 2² = 766477 is a prime.

It is a super-2 number, since 2×766481² = 1174986246722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (766487) 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, 2795 + ... + 3056.

It is an arithmetic number, because the mean of its divisors is an integer number (193116).

2⁷⁶⁶⁴⁸¹ is an apocalyptic number.

It is an amenable number.

766481 is a deficient number, since it is larger than the sum of its proper divisors (5983).

766481 is a wasteful number, since it uses less digits than its factorization.

766481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5982.

The product of its digits is 8064, while the sum is 32.

The square root of 766481 is about 875.4890062131. The cubic root of 766481 is about 91.5167238286.

The spelling of 766481 in words is "seven hundred sixty-six thousand, four hundred eighty-one".