168769406 has 8 divisors (see below), whose sum is σ = 272627544. Its totient is φ = 77893560.

The previous prime is 168769399. The next prime is 168769409. The reversal of 168769406 is 604967861.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×168769406² = 56966224803185672, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168769409) 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 3 ways as a sum of consecutive naturals, for example, 3245540 + ... + 3245591.

It is an arithmetic number, because the mean of its divisors is an integer number (34078443).

Almost surely, 2^168769406 is an apocalyptic number.

168769406 is a deficient number, since it is larger than the sum of its proper divisors (103858138).

168769406 is a wasteful number, since it uses less digits than its factorization.

168769406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6491146.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 168769406 is about 12991.1279725819. The cubic root of 168769406 is about 552.6259068923.

The spelling of 168769406 in words is "one hundred sixty-eight million, seven hundred sixty-nine thousand, four hundred six".