66572312 has 8 divisors (see below), whose sum is σ = 124823100. Its totient is φ = 33286152.

The previous prime is 66572279. The next prime is 66572321. The reversal of 66572312 is 21327566.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4160762 + ... + 4160777.

Almost surely, 2^66572312 is an apocalyptic number.

It is an amenable number.

66572312 is a deficient number, since it is larger than the sum of its proper divisors (58250788).

66572312 is a wasteful number, since it uses less digits than its factorization.

66572312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8321545 (or 8321541 counting only the distinct ones).

The product of its digits is 15120, while the sum is 32.

The square root of 66572312 is about 8159.1857436879. The cubic root of 66572312 is about 405.2887480055.

Adding to 66572312 its reverse (21327566), we get a palindrome (87899878).

The spelling of 66572312 in words is "sixty-six million, five hundred seventy-two thousand, three hundred twelve".