66226376 has 8 divisors (see below), whose sum is σ = 124174470. Its totient is φ = 33113184.

The previous prime is 66226367. The next prime is 66226387. The reversal of 66226376 is 67362266.

It can be written as a sum of positive squares in only one way, i.e., 65772100 + 454276 = 8110^2 + 674^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4139141 + ... + 4139156.

Almost surely, 2^66226376 is an apocalyptic number.

It is an amenable number.

66226376 is a deficient number, since it is larger than the sum of its proper divisors (57948094).

66226376 is a wasteful number, since it uses less digits than its factorization.

66226376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8278303 (or 8278299 counting only the distinct ones).

The product of its digits is 108864, while the sum is 38.

The square root of 66226376 is about 8137.9589578714. The cubic root of 66226376 is about 404.5855150880.

The spelling of 66226376 in words is "sixty-six million, two hundred twenty-six thousand, three hundred seventy-six".