140681664 has 112 divisors (see below), whose sum is σ = 437997600. Its totient is φ = 44126208.

The previous prime is 140681641. The next prime is 140681683. The reversal of 140681664 is 466186041.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26982 + ... + 31770.

Almost surely, 2^140681664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140681664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218998800).

140681664 is an abundant number, since it is smaller than the sum of its proper divisors (297315936).

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

140681664 is a wasteful number, since it uses less digits than its factorization.

140681664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4827 (or 4811 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 140681664 is about 11860.9301490229. The cubic root of 140681664 is about 520.0907928250.

The spelling of 140681664 in words is "one hundred forty million, six hundred eighty-one thousand, six hundred sixty-four".