169868961 has 32 divisors (see below), whose sum is σ = 269733120. Its totient is φ = 105380352.

The previous prime is 169868953. The next prime is 169868969.

169868961 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (169868953) and next prime (169868969).

It is not a de Polignac number, because 169868961 - 2³ = 169868953 is a prime.

It is a super-2 number, since 2×169868961² = 57710927822439042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 169868898 and 169868907.

It is not an unprimeable number, because it can be changed into a prime (169868969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19281 + ... + 26673.

It is an arithmetic number, because the mean of its divisors is an integer number (8429160).

Almost surely, 2^169868961 is an apocalyptic number.

It is an amenable number.

169868961 is a deficient number, since it is larger than the sum of its proper divisors (99864159).

169868961 is a wasteful number, since it uses less digits than its factorization.

169868961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7462 (or 7456 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The square root of 169868961 is about 13033.3787254112. The cubic root of 169868961 is about 553.8234535434.

The spelling of 169868961 in words is "one hundred sixty-nine million, eight hundred sixty-eight thousand, nine hundred sixty-one".