140508647 has 8 divisors (see below), whose sum is σ = 148962432. Its totient is φ = 132300000.

The previous prime is 140508611. The next prime is 140508673. The reversal of 140508647 is 746805041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140508647 - 2²⁴ = 123731431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140504647) 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, 60104 + ... + 62397.

It is an arithmetic number, because the mean of its divisors is an integer number (18620304).

Almost surely, 2^140508647 is an apocalyptic number.

140508647 is a deficient number, since it is larger than the sum of its proper divisors (8453785).

140508647 is a wasteful number, since it uses less digits than its factorization.

140508647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122569.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 140508647 is about 11853.6343371980. The cubic root of 140508647 is about 519.8774945636.

The spelling of 140508647 in words is "one hundred forty million, five hundred eight thousand, six hundred forty-seven".