168545720 has 32 divisors (see below), whose sum is σ = 433404000. Its totient is φ = 57787008.

The previous prime is 168545687. The next prime is 168545723. The reversal of 168545720 is 27545861.

168545720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168545723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300695 + ... + 301254.

It is an arithmetic number, because the mean of its divisors is an integer number (13543875).

Almost surely, 2^168545720 is an apocalyptic number.

168545720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168545720 is an abundant number, since it is smaller than the sum of its proper divisors (264858280).

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

168545720 is a wasteful number, since it uses less digits than its factorization.

168545720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601967 (or 601963 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 168545720 is about 12982.5159349026. The cubic root of 168545720 is about 552.3816498821.

The spelling of 168545720 in words is "one hundred sixty-eight million, five hundred forty-five thousand, seven hundred twenty".