66133351 has 2 divisors, whose sum is σ = 66133352. Its totient is φ = 66133350.

The previous prime is 66133337. The next prime is 66133391. The reversal of 66133351 is 15333166.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66133351 is a prime.

It is a super-2 number, since 2×66133351² = 8747240228978402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66133391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33066675 + 33066676.

It is an arithmetic number, because the mean of its divisors is an integer number (33066676).

Almost surely, 2^66133351 is an apocalyptic number.

66133351 is a deficient number, since it is larger than the sum of its proper divisors (1).

66133351 is an equidigital number, since it uses as much as digits as its factorization.

66133351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860, while the sum is 28.

The square root of 66133351 is about 8132.2414499325. The cubic root of 66133351 is about 404.3959923950.

The spelling of 66133351 in words is "sixty-six million, one hundred thirty-three thousand, three hundred fifty-one".