168870646 has 32 divisors (see below), whose sum is σ = 303114240. Its totient is φ = 68989536.

The previous prime is 168870643. The next prime is 168870649. The reversal of 168870646 is 646078861.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (168870643) and next prime (168870649).

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a junction number, because it is equal to n+sod(n) for n = 168870596 and 168870605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168870641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117460 + ... + 118888.

It is an arithmetic number, because the mean of its divisors is an integer number (9472320).

Almost surely, 2^168870646 is an apocalyptic number.

168870646 is a deficient number, since it is larger than the sum of its proper divisors (134243594).

168870646 is a wasteful number, since it uses less digits than its factorization.

168870646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 168870646 is about 12995.0238937833. The cubic root of 168870646 is about 552.7363863619.

The spelling of 168870646 in words is "one hundred sixty-eight million, eight hundred seventy thousand, six hundred forty-six".