766407 has 4 divisors (see below), whose sum is σ = 1021880. Its totient is φ = 510936.

The previous prime is 766399. The next prime is 766421. The reversal of 766407 is 704667.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 766407 - 2³ = 766399 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766457) 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, 127732 + ... + 127737.

It is an arithmetic number, because the mean of its divisors is an integer number (255470).

2⁷⁶⁶⁴⁰⁷ is an apocalyptic number.

766407 is a deficient number, since it is larger than the sum of its proper divisors (255473).

766407 is a wasteful number, since it uses less digits than its factorization.

766407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255472.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 766407 is about 875.4467430975. The cubic root of 766407 is about 91.5137785694.

The spelling of 766407 in words is "seven hundred sixty-six thousand, four hundred seven".