147000781 has 2 divisors, whose sum is σ = 147000782. Its totient is φ = 147000780.

The previous prime is 147000761. The next prime is 147000787. The reversal of 147000781 is 187000741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145202500 + 1798281 = 12050^2 + 1341^2 .

It is a cyclic number.

It is not a de Polignac number, because 147000781 - 2⁷ = 147000653 is a prime.

It is a super-2 number, since 2×147000781² = 43218459229219922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147000787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73500390 + 73500391.

It is an arithmetic number, because the mean of its divisors is an integer number (73500391).

Almost surely, 2^147000781 is an apocalyptic number.

It is an amenable number.

147000781 is a deficient number, since it is larger than the sum of its proper divisors (1).

147000781 is an equidigital number, since it uses as much as digits as its factorization.

147000781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 147000781 is about 12124.3878608365. The cubic root of 147000781 is about 527.7641434442.

The spelling of 147000781 in words is "one hundred forty-seven million, seven hundred eighty-one", and thus it is an aban number.