66093787 has 2 divisors, whose sum is σ = 66093788. Its totient is φ = 66093786.

The previous prime is 66093737. The next prime is 66093817. The reversal of 66093787 is 78739066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66093787 - 2⁷ = 66093659 is a prime.

It is not a weakly prime, because it can be changed into another prime (66093707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33046893 + 33046894.

It is an arithmetic number, because the mean of its divisors is an integer number (33046894).

Almost surely, 2^66093787 is an apocalyptic number.

66093787 is a deficient number, since it is larger than the sum of its proper divisors (1).

66093787 is an equidigital number, since it uses as much as digits as its factorization.

66093787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 66093787 is about 8129.8085463312. The cubic root of 66093787 is about 404.3153335725.

The spelling of 66093787 in words is "sixty-six million, ninety-three thousand, seven hundred eighty-seven".