149681660 has 24 divisors (see below), whose sum is σ = 317387616. Its totient is φ = 59290560.

The previous prime is 149681657. The next prime is 149681681. The reversal of 149681660 is 66186941.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34271 + ... + 38390.

It is an arithmetic number, because the mean of its divisors is an integer number (13224484).

Almost surely, 2^149681660 is an apocalyptic number.

149681660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149681660 is an abundant number, since it is smaller than the sum of its proper divisors (167705956).

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

149681660 is a wasteful number, since it uses less digits than its factorization.

149681660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72773 (or 72771 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 149681660 is about 12234.4456351728. The cubic root of 149681660 is about 530.9531442324.

The spelling of 149681660 in words is "one hundred forty-nine million, six hundred eighty-one thousand, six hundred sixty".