66050947 has 2 divisors, whose sum is σ = 66050948. Its totient is φ = 66050946.

The previous prime is 66050939. The next prime is 66050953. The reversal of 66050947 is 74905066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66050947 - 2³ = 66050939 is a prime.

It is not a weakly prime, because it can be changed into another prime (66050977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33025473 + 33025474.

It is an arithmetic number, because the mean of its divisors is an integer number (33025474).

Almost surely, 2^66050947 is an apocalyptic number.

66050947 is a deficient number, since it is larger than the sum of its proper divisors (1).

66050947 is an equidigital number, since it uses as much as digits as its factorization.

66050947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 66050947 is about 8127.1733708590. The cubic root of 66050947 is about 404.2279596890.

The spelling of 66050947 in words is "sixty-six million, fifty thousand, nine hundred forty-seven".