147980681 has 2 divisors, whose sum is σ = 147980682. Its totient is φ = 147980680.

The previous prime is 147980669. The next prime is 147980731. The reversal of 147980681 is 186089741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132457081 + 15523600 = 11509^2 + 3940^2 .

It is an emirp because it is prime and its reverse (186089741) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 147980681 - 2¹⁸ = 147718537 is a prime.

It is a super-2 number, since 2×147980681² = 43796563898447522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (147980641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73990340 + 73990341.

It is an arithmetic number, because the mean of its divisors is an integer number (73990341).

Almost surely, 2^147980681 is an apocalyptic number.

It is an amenable number.

147980681 is a deficient number, since it is larger than the sum of its proper divisors (1).

147980681 is an equidigital number, since it uses as much as digits as its factorization.

147980681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 147980681 is about 12164.7310286747. The cubic root of 147980681 is about 528.9342306709.

The spelling of 147980681 in words is "one hundred forty-seven million, nine hundred eighty thousand, six hundred eighty-one".