168720334 has 4 divisors (see below), whose sum is σ = 253080504. Its totient is φ = 84360166.

The previous prime is 168720329. The next prime is 168720367. The reversal of 168720334 is 433027861.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×168720334² = 56933102210143112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 168720334.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42180082 + ... + 42180085.

It is an arithmetic number, because the mean of its divisors is an integer number (63270126).

Almost surely, 2^168720334 is an apocalyptic number.

168720334 is a deficient number, since it is larger than the sum of its proper divisors (84360170).

168720334 is an equidigital number, since it uses as much as digits as its factorization.

168720334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84360169.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 168720334 is about 12989.2391617061. The cubic root of 168720334 is about 552.5723405343.

The spelling of 168720334 in words is "one hundred sixty-eight million, seven hundred twenty thousand, three hundred thirty-four".