670553 has 4 divisors (see below), whose sum is σ = 722148. Its totient is φ = 618960.

The previous prime is 670543. The next prime is 670559. The reversal of 670553 is 355076.

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

It can be written as a sum of positive squares in 2 ways, for example, as 35344 + 635209 = 188^2 + 797^2 .

It is a cyclic number.

It is not a de Polignac number, because 670553 - 2⁶ = 670489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670559) 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, 25778 + ... + 25803.

It is an arithmetic number, because the mean of its divisors is an integer number (180537).

2⁶⁷⁰⁵⁵³ is an apocalyptic number.

It is an amenable number.

670553 is a deficient number, since it is larger than the sum of its proper divisors (51595).

670553 is a wasteful number, since it uses less digits than its factorization.

670553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51594.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 670553 is about 818.8730060272. The cubic root of 670553 is about 87.5274689268.

The spelling of 670553 in words is "six hundred seventy thousand, five hundred fifty-three".