140329688 has 8 divisors (see below), whose sum is σ = 263118180. Its totient is φ = 70164840.

The previous prime is 140329681. The next prime is 140329697. The reversal of 140329688 is 886923041.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140329681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8770598 + ... + 8770613.

Almost surely, 2^140329688 is an apocalyptic number.

It is an amenable number.

140329688 is a deficient number, since it is larger than the sum of its proper divisors (122788492).

140329688 is a wasteful number, since it uses less digits than its factorization.

140329688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17541217 (or 17541213 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 140329688 is about 11846.0832345548. The cubic root of 140329688 is about 519.6566866032.

The spelling of 140329688 in words is "one hundred forty million, three hundred twenty-nine thousand, six hundred eighty-eight".