140616617 has 4 divisors (see below), whose sum is σ = 140934480. Its totient is φ = 140298756.

The previous prime is 140616611. The next prime is 140616629. The reversal of 140616617 is 716616041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 716616041 = 19379 ⋅36979.

It is a cyclic number.

It is not a de Polignac number, because 140616617 - 2⁴ = 140616601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140616611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158267 + ... + 159152.

It is an arithmetic number, because the mean of its divisors is an integer number (35233620).

Almost surely, 2^140616617 is an apocalyptic number.

It is an amenable number.

140616617 is a deficient number, since it is larger than the sum of its proper divisors (317863).

140616617 is an equidigital number, since it uses as much as digits as its factorization.

140616617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317862.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 140616617 is about 11858.1877620486. The cubic root of 140616617 is about 520.0106223175.

The spelling of 140616617 in words is "one hundred forty million, six hundred sixteen thousand, six hundred seventeen".