766013 has 4 divisors (see below), whose sum is σ = 773280. Its totient is φ = 758748.

The previous prime is 765991. The next prime is 766021. The reversal of 766013 is 310667.

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, and also an emirpimes, since its reverse is a distinct semiprime: 310667 = 7 ⋅44381.

It is a cyclic number.

It is not a de Polignac number, because 766013 - 2⁶ = 765949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 766013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766313) 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 3 ways as a sum of consecutive naturals, for example, 3473 + ... + 3686.

It is an arithmetic number, because the mean of its divisors is an integer number (193320).

2⁷⁶⁶⁰¹³ is an apocalyptic number.

It is an amenable number.

766013 is a deficient number, since it is larger than the sum of its proper divisors (7267).

766013 is a wasteful number, since it uses less digits than its factorization.

766013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7266.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 766013 is about 875.2216862030. The cubic root of 766013 is about 91.4980938618.

The spelling of 766013 in words is "seven hundred sixty-six thousand, thirteen".