245640170 has 16 divisors (see below), whose sum is σ = 465423840. Its totient is φ = 93084624.

The previous prime is 245640163. The next prime is 245640211. The reversal of 245640170 is 71046542.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 646232 + ... + 646611.

It is an arithmetic number, because the mean of its divisors is an integer number (29088990).

Almost surely, 2^245640170 is an apocalyptic number.

245640170 is a deficient number, since it is larger than the sum of its proper divisors (219783670).

245640170 is a wasteful number, since it uses less digits than its factorization.

245640170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292869.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 245640170 is about 15672.9119821429. The cubic root of 245640170 is about 626.2770007867.

The spelling of 245640170 in words is "two hundred forty-five million, six hundred forty thousand, one hundred seventy".