66250363 has 2 divisors, whose sum is σ = 66250364. Its totient is φ = 66250362.

The previous prime is 66250361. The next prime is 66250381. The reversal of 66250363 is 36305266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66250363 - 2¹ = 66250361 is a prime.

It is a super-2 number, since 2×66250363² = 8778221195263538, which contains 22 as substring.

Together with 66250361, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (66250361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33125181 + 33125182.

It is an arithmetic number, because the mean of its divisors is an integer number (33125182).

Almost surely, 2^66250363 is an apocalyptic number.

66250363 is a deficient number, since it is larger than the sum of its proper divisors (1).

66250363 is an equidigital number, since it uses as much as digits as its factorization.

66250363 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 31.

The square root of 66250363 is about 8139.4325969320. The cubic root of 66250363 is about 404.6343557559.

The spelling of 66250363 in words is "sixty-six million, two hundred fifty thousand, three hundred sixty-three".