66898622 has 24 divisors (see below), whose sum is σ = 118222560. Its totient is φ = 28304640.

The previous prime is 66898619. The next prime is 66898649. The reversal of 66898622 is 22689866.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3422 + ... + 12062.

It is an arithmetic number, because the mean of its divisors is an integer number (4925940).

Almost surely, 2^66898622 is an apocalyptic number.

66898622 is a deficient number, since it is larger than the sum of its proper divisors (51323938).

66898622 is a wasteful number, since it uses less digits than its factorization.

66898622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8736 (or 8729 counting only the distinct ones).

The product of its digits is 497664, while the sum is 47.

The square root of 66898622 is about 8179.1577806031. The cubic root of 66898622 is about 405.9498550831.

The spelling of 66898622 in words is "sixty-six million, eight hundred ninety-eight thousand, six hundred twenty-two".