66106426 has 8 divisors (see below), whose sum is σ = 99288000. Its totient is φ = 33010428.

The previous prime is 66106363. The next prime is 66106433. The reversal of 66106426 is 62460166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19426 + ... + 22573.

It is an arithmetic number, because the mean of its divisors is an integer number (12411000).

Almost surely, 2^66106426 is an apocalyptic number.

66106426 is a deficient number, since it is larger than the sum of its proper divisors (33181574).

66106426 is a wasteful number, since it uses less digits than its factorization.

66106426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42788.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 66106426 is about 8130.5858337515. The cubic root of 66106426 is about 404.3411041027.

The spelling of 66106426 in words is "sixty-six million, one hundred six thousand, four hundred twenty-six".