766417 has 4 divisors (see below), whose sum is σ = 768240. Its totient is φ = 764596.

The previous prime is 766399. The next prime is 766421. The reversal of 766417 is 714667.

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: 714667 = 59 ⋅12113.

It is a cyclic number.

It is not a de Polignac number, because 766417 - 2¹¹ = 764369 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (766457) 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, 78 + ... + 1240.

It is an arithmetic number, because the mean of its divisors is an integer number (192060).

2⁷⁶⁶⁴¹⁷ is an apocalyptic number.

It is an amenable number.

766417 is a deficient number, since it is larger than the sum of its proper divisors (1823).

766417 is a wasteful number, since it uses less digits than its factorization.

766417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822.

The product of its digits is 7056, while the sum is 31.

The square root of 766417 is about 875.4524544486. The cubic root of 766417 is about 91.5141765885.

The spelling of 766417 in words is "seven hundred sixty-six thousand, four hundred seventeen".