66437051 has 2 divisors, whose sum is σ = 66437052. Its totient is φ = 66437050.

The previous prime is 66437047. The next prime is 66437069. The reversal of 66437051 is 15073466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66437051 - 2² = 66437047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66436999 and 66437017.

It is not a weakly prime, because it can be changed into another prime (66437011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33218525 + 33218526.

It is an arithmetic number, because the mean of its divisors is an integer number (33218526).

Almost surely, 2^66437051 is an apocalyptic number.

66437051 is a deficient number, since it is larger than the sum of its proper divisors (1).

66437051 is an equidigital number, since it uses as much as digits as its factorization.

66437051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 66437051 is about 8150.8926505015. The cubic root of 66437051 is about 405.0140746011.

The spelling of 66437051 in words is "sixty-six million, four hundred thirty-seven thousand, fifty-one".