66895722 has 12 divisors (see below), whose sum is σ = 144940770. Its totient is φ = 22298568.

The previous prime is 66895687. The next prime is 66895733. The reversal of 66895722 is 22759866.

It can be written as a sum of positive squares in only one way, i.e., 55666521 + 11229201 = 7461^2 + 3351^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1858197 + ... + 1858232.

Almost surely, 2^66895722 is an apocalyptic number.

66895722 is an abundant number, since it is smaller than the sum of its proper divisors (78045048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66895722 is a wasteful number, since it uses less digits than its factorization.

66895722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3716437 (or 3716434 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 66895722 is about 8178.9804988152. The cubic root of 66895722 is about 405.9439891347.

The spelling of 66895722 in words is "sixty-six million, eight hundred ninety-five thousand, seven hundred twenty-two".