140616247 has 2 divisors, whose sum is σ = 140616248. Its totient is φ = 140616246.

The previous prime is 140616241. The next prime is 140616257. The reversal of 140616247 is 742616041.

It is a weak prime.

It is an emirp because it is prime and its reverse (742616041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140616247 - 2²⁷ = 6398519 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140616241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70308123 + 70308124.

It is an arithmetic number, because the mean of its divisors is an integer number (70308124).

Almost surely, 2^140616247 is an apocalyptic number.

140616247 is a deficient number, since it is larger than the sum of its proper divisors (1).

140616247 is an equidigital number, since it uses as much as digits as its factorization.

140616247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 140616247 is about 11858.1721610036. The cubic root of 140616247 is about 520.0101662214.

The spelling of 140616247 in words is "one hundred forty million, six hundred sixteen thousand, two hundred forty-seven".