66437011 has 2 divisors, whose sum is σ = 66437012. Its totient is φ = 66437010.

The previous prime is 66436973. The next prime is 66437023. The reversal of 66437011 is 11073466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66437011 - 2⁹ = 66436499 is a prime.

It is a super-2 number, since 2×66437011² = 8827752861228242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (66437051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33218505 + 33218506.

It is an arithmetic number, because the mean of its divisors is an integer number (33218506).

Almost surely, 2^66437011 is an apocalyptic number.

66437011 is a deficient number, since it is larger than the sum of its proper divisors (1).

66437011 is an equidigital number, since it uses as much as digits as its factorization.

66437011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 66437011 is about 8150.8901967822. The cubic root of 66437011 is about 405.0139933183.

It can be divided in two parts, 664 and 37011, that added together give a triangular number (37675 = T₂₇₄).

The spelling of 66437011 in words is "sixty-six million, four hundred thirty-seven thousand, eleven".