140666880 has 192 divisors, whose sum is σ = 475675200. Its totient is φ = 35389440.

The previous prime is 140666863. The next prime is 140666887. The reversal of 140666880 is 88666041.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×140666880² = 39574342257868800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140666887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 583560 + ... + 583800.

It is an arithmetic number, because the mean of its divisors is an integer number (2477475).

Almost surely, 2^140666880 is an apocalyptic number.

140666880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140666880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237837600).

140666880 is an abundant number, since it is smaller than the sum of its proper divisors (335008320).

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

140666880 is a wasteful number, since it uses less digits than its factorization.

140666880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 140666880 is about 11860.3069100256. The cubic root of 140666880 is about 520.0725736972.

It can be divided in two parts, 1406 and 66880, that added together give a palindrome (68286).

The spelling of 140666880 in words is "one hundred forty million, six hundred sixty-six thousand, eight hundred eighty".