140887651 has 4 divisors (see below), whose sum is σ = 144164152. Its totient is φ = 137611152.

The previous prime is 140887633. The next prime is 140887661. The reversal of 140887651 is 156788041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 156788041 = 3547 ⋅44203.

It is a cyclic number.

It is not a de Polignac number, because 140887651 - 2²³ = 132499043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140887661) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1638186 + ... + 1638271.

It is an arithmetic number, because the mean of its divisors is an integer number (36041038).

Almost surely, 2^140887651 is an apocalyptic number.

140887651 is a deficient number, since it is larger than the sum of its proper divisors (3276501).

140887651 is an equidigital number, since it uses as much as digits as its factorization.

140887651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3276500.

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 140887651 is about 11869.6103979870. The cubic root of 140887651 is about 520.3445091323.

The spelling of 140887651 in words is "one hundred forty million, eight hundred eighty-seven thousand, six hundred fifty-one".