168432646 has 8 divisors (see below), whose sum is σ = 252855000. Its totient is φ = 84147648.

The previous prime is 168432637. The next prime is 168432679. The reversal of 168432646 is 646234861.

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

It is a super-2 number, since 2×168432646² = 56739112477122632, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 168432599 and 168432608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31216 + ... + 36211.

It is an arithmetic number, because the mean of its divisors is an integer number (31606875).

Almost surely, 2^168432646 is an apocalyptic number.

168432646 is a deficient number, since it is larger than the sum of its proper divisors (84422354).

168432646 is a wasteful number, since it uses less digits than its factorization.

168432646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68678.

The product of its digits is 165888, while the sum is 40.

The square root of 168432646 is about 12978.1603472911. The cubic root of 168432646 is about 552.2580949289.

The spelling of 168432646 in words is "one hundred sixty-eight million, four hundred thirty-two thousand, six hundred forty-six".