66283031 has 2 divisors, whose sum is σ = 66283032. Its totient is φ = 66283030.

The previous prime is 66283013. The next prime is 66283043. The reversal of 66283031 is 13038266.

Together with previous prime (66283013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66283031 - 2¹⁴ = 66266647 is a prime.

It is a super-2 number, since 2×66283031² = 8786880397093922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66282985 and 66283003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66283331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33141515 + 33141516.

It is an arithmetic number, because the mean of its divisors is an integer number (33141516).

Almost surely, 2^66283031 is an apocalyptic number.

66283031 is a deficient number, since it is larger than the sum of its proper divisors (1).

66283031 is an equidigital number, since it uses as much as digits as its factorization.

66283031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 66283031 is about 8141.4391233983. The cubic root of 66283031 is about 404.7008531175.

The spelling of 66283031 in words is "sixty-six million, two hundred eighty-three thousand, thirty-one".