66602951 has 2 divisors, whose sum is σ = 66602952. Its totient is φ = 66602950.

The previous prime is 66602947. The next prime is 66602959. The reversal of 66602951 is 15920666.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66602951 - 2² = 66602947 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66602959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33301475 + 33301476.

It is an arithmetic number, because the mean of its divisors is an integer number (33301476).

Almost surely, 2^66602951 is an apocalyptic number.

66602951 is a deficient number, since it is larger than the sum of its proper divisors (1).

66602951 is an equidigital number, since it uses as much as digits as its factorization.

66602951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 66602951 is about 8161.0631047677. The cubic root of 66602951 is about 405.3509146783.

The spelling of 66602951 in words is "sixty-six million, six hundred two thousand, nine hundred fifty-one".