66370466 has 4 divisors (see below), whose sum is σ = 99555702. Its totient is φ = 33185232.

The previous prime is 66370463. The next prime is 66370471. The reversal of 66370466 is 66407366.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66407366 = 2 ⋅33203683.

It can be written as a sum of positive squares in only one way, i.e., 63664441 + 2706025 = 7979^2 + 1645^2 .

It is not an unprimeable number, because it can be changed into a prime (66370463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16592615 + ... + 16592618.

Almost surely, 2^66370466 is an apocalyptic number.

66370466 is a deficient number, since it is larger than the sum of its proper divisors (33185236).

66370466 is a wasteful number, since it uses less digits than its factorization.

66370466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33185235.

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

The square root of 66370466 is about 8146.8071046269. The cubic root of 66370466 is about 404.8787240395.

The spelling of 66370466 in words is "sixty-six million, three hundred seventy thousand, four hundred sixty-six".