140647641 has 16 divisors (see below), whose sum is σ = 192000000. Its totient is φ = 91540368.

The previous prime is 140647631. The next prime is 140647649. The reversal of 140647641 is 146746041.

It is not a de Polignac number, because 140647641 - 2⁵ = 140647609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140647649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69360 + ... + 71358.

It is an arithmetic number, because the mean of its divisors is an integer number (12000000).

Almost surely, 2^140647641 is an apocalyptic number.

It is an amenable number.

140647641 is a deficient number, since it is larger than the sum of its proper divisors (51352359).

140647641 is a wasteful number, since it uses less digits than its factorization.

140647641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2548.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 140647641 is about 11859.4958155901. The cubic root of 140647641 is about 520.0488625189.

The spelling of 140647641 in words is "one hundred forty million, six hundred forty-seven thousand, six hundred forty-one".