140608817 has 2 divisors, whose sum is σ = 140608818. Its totient is φ = 140608816.

The previous prime is 140608789. The next prime is 140608879. The reversal of 140608817 is 718806041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138391696 + 2217121 = 11764^2 + 1489^2 .

It is a cyclic number.

It is not a de Polignac number, because 140608817 - 2¹² = 140604721 is a prime.

It is not a weakly prime, because it can be changed into another prime (140601817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70304408 + 70304409.

It is an arithmetic number, because the mean of its divisors is an integer number (70304409).

Almost surely, 2^140608817 is an apocalyptic number.

It is an amenable number.

140608817 is a deficient number, since it is larger than the sum of its proper divisors (1).

140608817 is an equidigital number, since it uses as much as digits as its factorization.

140608817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 140608817 is about 11857.8588708080. The cubic root of 140608817 is about 520.0010071480.

The spelling of 140608817 in words is "one hundred forty million, six hundred eight thousand, eight hundred seventeen".