764425 has 6 divisors (see below), whose sum is σ = 947918. Its totient is φ = 611520.

The previous prime is 764399. The next prime is 764431. The reversal of 764425 is 524467.

It can be written as a sum of positive squares in 3 ways, for example, as 23104 + 741321 = 152^2 + 861^2 .

It is not a de Polignac number, because 764425 - 2⁹ = 763913 is a prime.

It is a Duffinian number.

764425 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 764393 and 764402.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15264 + ... + 15313.

2⁷⁶⁴⁴²⁵ is an apocalyptic number.

It is an amenable number.

764425 is a deficient number, since it is larger than the sum of its proper divisors (183493).

764425 is a wasteful number, since it uses less digits than its factorization.

764425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30587 (or 30582 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 764425 is about 874.3140168155. The cubic root of 764425 is about 91.4348227450.

The spelling of 764425 in words is "seven hundred sixty-four thousand, four hundred twenty-five".