140671660 has 12 divisors (see below), whose sum is σ = 295410528. Its totient is φ = 56268656.

The previous prime is 140671639. The next prime is 140671679. The reversal of 140671660 is 66176041.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3516772 + ... + 3516811.

It is an arithmetic number, because the mean of its divisors is an integer number (24617544).

Almost surely, 2^140671660 is an apocalyptic number.

140671660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140671660 is an abundant number, since it is smaller than the sum of its proper divisors (154738868).

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

140671660 is a wasteful number, since it uses less digits than its factorization.

140671660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7033592 (or 7033590 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 140671660 is about 11860.5084208056. The cubic root of 140671660 is about 520.0784644910.

The spelling of 140671660 in words is "one hundred forty million, six hundred seventy-one thousand, six hundred sixty".