168722674 has 4 divisors (see below), whose sum is σ = 253084014. Its totient is φ = 84361336.

The previous prime is 168722663. The next prime is 168722681. The reversal of 168722674 is 476227861.

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., 166023225 + 2699449 = 12885^2 + 1643^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 168722674.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 42180667 + ... + 42180670.

Almost surely, 2^168722674 is an apocalyptic number.

168722674 is a deficient number, since it is larger than the sum of its proper divisors (84361340).

168722674 is an equidigital number, since it uses as much as digits as its factorization.

168722674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84361339.

The product of its digits is 225792, while the sum is 43.

The square root of 168722674 is about 12989.3292359536. The cubic root of 168722674 is about 552.5748950837.

The spelling of 168722674 in words is "one hundred sixty-eight million, seven hundred twenty-two thousand, six hundred seventy-four".