140277647 has 2 divisors, whose sum is σ = 140277648. Its totient is φ = 140277646.

The previous prime is 140277629. The next prime is 140277649. The reversal of 140277647 is 746772041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140277647 - 2⁶ = 140277583 is a prime.

Together with 140277649, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140277647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140277649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70138823 + 70138824.

It is an arithmetic number, because the mean of its divisors is an integer number (70138824).

Almost surely, 2^140277647 is an apocalyptic number.

140277647 is a deficient number, since it is larger than the sum of its proper divisors (1).

140277647 is an equidigital number, since it uses as much as digits as its factorization.

140277647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 140277647 is about 11843.8864820632. The cubic root of 140277647 is about 519.5924407601.

The spelling of 140277647 in words is "one hundred forty million, two hundred seventy-seven thousand, six hundred forty-seven".