66598622 has 16 divisors (see below), whose sum is σ = 106252560. Its totient is φ = 31198848.

The previous prime is 66598601. The next prime is 66598643. The reversal of 66598622 is 22689566.

It is an interprime number because it is at equal distance from previous prime (66598601) and next prime (66598643).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3404 + ... + 12032.

It is an arithmetic number, because the mean of its divisors is an integer number (6640785).

Almost surely, 2^66598622 is an apocalyptic number.

66598622 is a deficient number, since it is larger than the sum of its proper divisors (39653938).

66598622 is a wasteful number, since it uses less digits than its factorization.

66598622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8875.

The product of its digits is 311040, while the sum is 44.

The square root of 66598622 is about 8160.7978776588. The cubic root of 66598622 is about 405.3421322740.

The spelling of 66598622 in words is "sixty-six million, five hundred ninety-eight thousand, six hundred twenty-two".