670522 has 4 divisors (see below), whose sum is σ = 1005786. Its totient is φ = 335260.

The previous prime is 670517. The next prime is 670541. The reversal of 670522 is 225076.

670522 is nontrivially palindromic in base 16.

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

It can be written as a sum of positive squares in only one way, i.e., 534361 + 136161 = 731^2 + 369^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 670493 and 670502.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 167629 + ... + 167632.

2⁶⁷⁰⁵²² is an apocalyptic number.

670522 is a deficient number, since it is larger than the sum of its proper divisors (335264).

670522 is a wasteful number, since it uses less digits than its factorization.

670522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335263.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 670522 is about 818.8540773544. The cubic root of 670522 is about 87.5261200931.

Adding to 670522 its reverse (225076), we get a palindrome (895598).

The spelling of 670522 in words is "six hundred seventy thousand, five hundred twenty-two".