66034949 has 2 divisors, whose sum is σ = 66034950. Its totient is φ = 66034948.

The previous prime is 66034933. The next prime is 66034963. The reversal of 66034949 is 94943066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50154724 + 15880225 = 7082^2 + 3985^2 .

It is a cyclic number.

It is not a de Polignac number, because 66034949 - 2⁴ = 66034933 is a prime.

It is a super-2 number, since 2×66034949² = 8721228978865202, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66034649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33017474 + 33017475.

It is an arithmetic number, because the mean of its divisors is an integer number (33017475).

Almost surely, 2^66034949 is an apocalyptic number.

It is an amenable number.

66034949 is a deficient number, since it is larger than the sum of its proper divisors (1).

66034949 is an equidigital number, since it uses as much as digits as its factorization.

66034949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 66034949 is about 8126.1890822205. The cubic root of 66034949 is about 404.1953214435.

The spelling of 66034949 in words is "sixty-six million, thirty-four thousand, nine hundred forty-nine".