140681964 has 24 divisors (see below), whose sum is σ = 330846208. Its totient is φ = 46524240.

The previous prime is 140681963. The next prime is 140681971. The reversal of 140681964 is 469186041.

It is not an unprimeable number, because it can be changed into a prime (140681963) 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, 44632 + ... + 47679.

Almost surely, 2^140681964 is an apocalyptic number.

It is an amenable number.

140681964 is an abundant number, since it is smaller than the sum of its proper divisors (190164244).

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

140681964 is a wasteful number, since it uses less digits than its factorization.

140681964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92445 (or 92443 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 140681964 is about 11860.9427955791. The cubic root of 140681964 is about 520.0911625181.

The spelling of 140681964 in words is "one hundred forty million, six hundred eighty-one thousand, nine hundred sixty-four".