168698420 has 24 divisors (see below), whose sum is σ = 386473248. Its totient is φ = 61344800.

The previous prime is 168698393. The next prime is 168698441. The reversal of 168698420 is 24896861.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383186 + ... + 383625.

It is an arithmetic number, because the mean of its divisors is an integer number (16103052).

Almost surely, 2^168698420 is an apocalyptic number.

168698420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168698420 is an abundant number, since it is smaller than the sum of its proper divisors (217774828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168698420 is a wasteful number, since it uses less digits than its factorization.

168698420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766831 (or 766829 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 168698420 is about 12988.3955899102. The cubic root of 168698420 is about 552.5484161416.

The spelling of 168698420 in words is "one hundred sixty-eight million, six hundred ninety-eight thousand, four hundred twenty".