140566651 has 2 divisors, whose sum is σ = 140566652. Its totient is φ = 140566650.

The previous prime is 140566637. The next prime is 140566661. The reversal of 140566651 is 156665041.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140566651 - 2¹⁷ = 140435579 is a prime.

It is equal to p_7942282 and since 140566651 and 7942282 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (140566661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70283325 + 70283326.

It is an arithmetic number, because the mean of its divisors is an integer number (70283326).

Almost surely, 2^140566651 is an apocalyptic number.

140566651 is a deficient number, since it is larger than the sum of its proper divisors (1).

140566651 is an equidigital number, since it uses as much as digits as its factorization.

140566651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 140566651 is about 11856.0807605212. The cubic root of 140566651 is about 519.9490223695.

The spelling of 140566651 in words is "one hundred forty million, five hundred sixty-six thousand, six hundred fifty-one".