66742098 has 32 divisors (see below), whose sum is σ = 142905600. Its totient is φ = 20717136.

The previous prime is 66742087. The next prime is 66742103. The reversal of 66742098 is 89024766.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1765 + ... + 11687.

It is an arithmetic number, because the mean of its divisors is an integer number (4465800).

Almost surely, 2^66742098 is an apocalyptic number.

66742098 is an abundant number, since it is smaller than the sum of its proper divisors (76163502).

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

66742098 is a wasteful number, since it uses less digits than its factorization.

66742098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10006.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 66742098 is about 8169.5837103245. The cubic root of 66742098 is about 405.6330049314.

The spelling of 66742098 in words is "sixty-six million, seven hundred forty-two thousand, ninety-eight".