670898 has 4 divisors (see below), whose sum is σ = 1006350. Its totient is φ = 335448.

The previous prime is 670897. The next prime is 670903. The reversal of 670898 is 898076.

670898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 619369 + 51529 = 787^2 + 227^2 .

It is not an unprimeable number, because it can be changed into a prime (670897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167723 + ... + 167726.

2⁶⁷⁰⁸⁹⁸ is an apocalyptic number.

670898 is a deficient number, since it is larger than the sum of its proper divisors (335452).

670898 is a wasteful number, since it uses less digits than its factorization.

670898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335451.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 670898 is about 819.0836343134. The cubic root of 670898 is about 87.5424773350.

The spelling of 670898 in words is "six hundred seventy thousand, eight hundred ninety-eight".