670549 has 8 divisors (see below), whose sum is σ = 747648. Its totient is φ = 596160.

The previous prime is 670543. The next prime is 670559. The reversal of 670549 is 945076.

670549 is nontrivially palindromic in base 7.

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

It is a cyclic number.

It is not a de Polignac number, because 670549 - 2³ = 670541 is a prime.

It is a super-2 number, since 2×670549² = 899271922802, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 670549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670541) 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 7 ways as a sum of consecutive naturals, for example, 132 + ... + 1165.

It is an arithmetic number, because the mean of its divisors is an integer number (93456).

2⁶⁷⁰⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

670549 is a deficient number, since it is larger than the sum of its proper divisors (77099).

670549 is a wasteful number, since it uses less digits than its factorization.

670549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 670549 is about 818.8705636424. The cubic root of 670549 is about 87.5272948861.

The spelling of 670549 in words is "six hundred seventy thousand, five hundred forty-nine".