670653 has 16 divisors (see below), whose sum is σ = 1012800. Its totient is φ = 438480.

The previous prime is 670639. The next prime is 670669. The reversal of 670653 is 356076.

670653 is a `hidden beast` number, since 6 + 7 + 0 + 653 = 666.

It is not a de Polignac number, because 670653 - 2¹² = 666557 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670613) 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 15 ways as a sum of consecutive naturals, for example, 1383 + ... + 1803.

It is an arithmetic number, because the mean of its divisors is an integer number (63300).

2⁶⁷⁰⁶⁵³ is an apocalyptic number.

It is an amenable number.

670653 is a deficient number, since it is larger than the sum of its proper divisors (342147).

670653 is a wasteful number, since it uses less digits than its factorization.

670653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 670653 is about 818.9340632798. The cubic root of 670653 is about 87.5318197197.

The spelling of 670653 in words is "six hundred seventy thousand, six hundred fifty-three".