166368740 has 24 divisors (see below), whose sum is σ = 351473472. Its totient is φ = 66147680.

The previous prime is 166368739. The next prime is 166368743. The reversal of 166368740 is 47863661.

It is a super-3 number, since 3×166368740³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (166368743) 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, 21566 + ... + 28245.

It is an arithmetic number, because the mean of its divisors is an integer number (14644728).

Almost surely, 2^166368740 is an apocalyptic number.

166368740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166368740 is an abundant number, since it is smaller than the sum of its proper divisors (185104732).

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

166368740 is a wasteful number, since it uses less digits than its factorization.

166368740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49987 (or 49985 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 166368740 is about 12898.4006760528. The cubic root of 166368740 is about 549.9931018419.

The spelling of 166368740 in words is "one hundred sixty-six million, three hundred sixty-eight thousand, seven hundred forty".