66763337 has 2 divisors, whose sum is σ = 66763338. Its totient is φ = 66763336.

The previous prime is 66763331. The next prime is 66763349. The reversal of 66763337 is 73336766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33918976 + 32844361 = 5824^2 + 5731^2 .

It is a cyclic number.

It is not a de Polignac number, because 66763337 - 2¹⁶ = 66697801 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 66763294 and 66763303.

It is not a weakly prime, because it can be changed into another prime (66763331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33381668 + 33381669.

It is an arithmetic number, because the mean of its divisors is an integer number (33381669).

Almost surely, 2^66763337 is an apocalyptic number.

It is an amenable number.

66763337 is a deficient number, since it is larger than the sum of its proper divisors (1).

66763337 is an equidigital number, since it uses as much as digits as its factorization.

66763337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 41.

The square root of 66763337 is about 8170.8834895622. The cubic root of 66763337 is about 405.6760278807.

The spelling of 66763337 in words is "sixty-six million, seven hundred sixty-three thousand, three hundred thirty-seven".