874067981 has 2 divisors, whose sum is σ = 874067982. Its totient is φ = 874067980.

The previous prime is 874067969. The next prime is 874068023. The reversal of 874067981 is 189760478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 683351881 + 190716100 = 26141^2 + 13810^2 .

It is a cyclic number.

It is not a de Polignac number, because 874067981 - 2¹⁴ = 874051597 is a prime.

It is a super-2 number, since 2×874067981² = 1527989670818832722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (874067951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 437033990 + 437033991.

It is an arithmetic number, because the mean of its divisors is an integer number (437033991).

Almost surely, 2^874067981 is an apocalyptic number.

It is an amenable number.

874067981 is a deficient number, since it is larger than the sum of its proper divisors (1).

874067981 is an equidigital number, since it uses as much as digits as its factorization.

874067981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 874067981 is about 29564.6407216458. The cubic root of 874067981 is about 956.1258729850.

The spelling of 874067981 in words is "eight hundred seventy-four million, sixty-seven thousand, nine hundred eighty-one".