140582657 has 2 divisors, whose sum is σ = 140582658. Its totient is φ = 140582656.

The previous prime is 140582621. The next prime is 140582669. The reversal of 140582657 is 756285041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99121936 + 41460721 = 9956^2 + 6439^2 .

It is a cyclic number.

It is not a de Polignac number, because 140582657 - 2¹⁸ = 140320513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140582657.

It is not a weakly prime, because it can be changed into another prime (140582677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70291328 + 70291329.

It is an arithmetic number, because the mean of its divisors is an integer number (70291329).

Almost surely, 2^140582657 is an apocalyptic number.

It is an amenable number.

140582657 is a deficient number, since it is larger than the sum of its proper divisors (1).

140582657 is an equidigital number, since it uses as much as digits as its factorization.

140582657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 140582657 is about 11856.7557535778. The cubic root of 140582657 is about 519.9687567520.

The spelling of 140582657 in words is "one hundred forty million, five hundred eighty-two thousand, six hundred fifty-seven".