170660553 has 16 divisors (see below), whose sum is σ = 260447616. Its totient is φ = 97372800.

The previous prime is 170660551. The next prime is 170660599. The reversal of 170660553 is 355066071.

It is not a de Polignac number, because 170660553 - 2¹ = 170660551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (170660551) 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 15 ways as a sum of consecutive naturals, for example, 8925 + ... + 20517.

It is an arithmetic number, because the mean of its divisors is an integer number (16277976).

Almost surely, 2^170660553 is an apocalyptic number.

It is an amenable number.

170660553 is a deficient number, since it is larger than the sum of its proper divisors (89787063).

170660553 is a wasteful number, since it uses less digits than its factorization.

170660553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12304.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 170660553 is about 13063.7113026888. The cubic root of 170660553 is about 554.6823959956.

The spelling of 170660553 in words is "one hundred seventy million, six hundred sixty thousand, five hundred fifty-three".