140687915 has 8 divisors (see below), whose sum is σ = 168889968. Its totient is φ = 112507360.

The previous prime is 140687893. The next prime is 140687923. The reversal of 140687915 is 519786041.

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

It is not a de Polignac number, because 140687915 - 2²² = 136493611 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19505 + ... + 25725.

It is an arithmetic number, because the mean of its divisors is an integer number (21111246).

Almost surely, 2^140687915 is an apocalyptic number.

140687915 is a deficient number, since it is larger than the sum of its proper divisors (28202053).

140687915 is an equidigital number, since it uses as much as digits as its factorization.

140687915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10749.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 140687915 is about 11861.1936583128. The cubic root of 140687915 is about 520.0984958886.

The spelling of 140687915 in words is "one hundred forty million, six hundred eighty-seven thousand, nine hundred fifteen".