147206681 has 2 divisors, whose sum is σ = 147206682. Its totient is φ = 147206680.

The previous prime is 147206671. The next prime is 147206707. The reversal of 147206681 is 186602741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141824281 + 5382400 = 11909^2 + 2320^2 .

It is a cyclic number.

It is not a de Polignac number, because 147206681 - 2²⁶ = 80097817 is a prime.

It is a super-2 number, since 2×147206681² = 43339613862071522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (147206611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73603340 + 73603341.

It is an arithmetic number, because the mean of its divisors is an integer number (73603341).

Almost surely, 2^147206681 is an apocalyptic number.

It is an amenable number.

147206681 is a deficient number, since it is larger than the sum of its proper divisors (1).

147206681 is an equidigital number, since it uses as much as digits as its factorization.

147206681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 147206681 is about 12132.8760399173. The cubic root of 147206681 is about 528.0104367867.

The spelling of 147206681 in words is "one hundred forty-seven million, two hundred six thousand, six hundred eighty-one".