670431 has 8 divisors (see below), whose sum is σ = 899200. Its totient is φ = 444312.

The previous prime is 670409. The next prime is 670447. The reversal of 670431 is 134076.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 670431 - 2⁵ = 670399 is a prime.

It is a super-2 number, since 2×670431² = 898955451522, which contains 22 as substring.

It is a Duffinian number.

670431 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 670398 and 670407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36 + ... + 1158.

It is an arithmetic number, because the mean of its divisors is an integer number (112400).

2⁶⁷⁰⁴³¹ is an apocalyptic number.

670431 is a deficient number, since it is larger than the sum of its proper divisors (228769).

670431 is a wasteful number, since it uses less digits than its factorization.

670431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 670431 is about 818.7985100133. The cubic root of 670431 is about 87.5221603736.

The spelling of 670431 in words is "six hundred seventy thousand, four hundred thirty-one".