167201680 has 20 divisors (see below), whose sum is σ = 388744092. Its totient is φ = 66880640.

The previous prime is 167201677. The next prime is 167201689. The reversal of 167201680 is 86102761.

It can be written as a sum of positive squares in 2 ways, for example, as 43191184 + 124010496 = 6572^2 + 11136^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (167201689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1044931 + ... + 1045090.

Almost surely, 2^167201680 is an apocalyptic number.

167201680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

167201680 is an abundant number, since it is smaller than the sum of its proper divisors (221542412).

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

167201680 is a wasteful number, since it uses less digits than its factorization.

167201680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090034 (or 2090028 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 167201680 is about 12930.6488622961. The cubic root of 167201680 is about 550.9094375442.

The spelling of 167201680 in words is "one hundred sixty-seven million, two hundred one thousand, six hundred eighty".