66346226 has 4 divisors (see below), whose sum is σ = 99519342. Its totient is φ = 33173112.

The previous prime is 66346219. The next prime is 66346249. The reversal of 66346226 is 62264366.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62264366 = 2 ⋅31132183.

It can be written as a sum of positive squares in only one way, i.e., 44209201 + 22137025 = 6649^2 + 4705^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16586555 + ... + 16586558.

Almost surely, 2^66346226 is an apocalyptic number.

66346226 is a deficient number, since it is larger than the sum of its proper divisors (33173116).

66346226 is a wasteful number, since it uses less digits than its factorization.

66346226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33173115.

The product of its digits is 62208, while the sum is 35.

The square root of 66346226 is about 8145.3192693718. The cubic root of 66346226 is about 404.8294277390.

The spelling of 66346226 in words is "sixty-six million, three hundred forty-six thousand, two hundred twenty-six".