66252506 has 8 divisors (see below), whose sum is σ = 104609280. Its totient is φ = 31382748.

The previous prime is 66252503. The next prime is 66252517. The reversal of 66252506 is 60525266.

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

It is not an unprimeable number, because it can be changed into a prime (66252503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 871706 + ... + 871781.

It is an arithmetic number, because the mean of its divisors is an integer number (13076160).

Almost surely, 2^66252506 is an apocalyptic number.

66252506 is a deficient number, since it is larger than the sum of its proper divisors (38356774).

66252506 is a wasteful number, since it uses less digits than its factorization.

66252506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743508.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 66252506 is about 8139.5642389504. The cubic root of 66252506 is about 404.6387186104.

The spelling of 66252506 in words is "sixty-six million, two hundred fifty-two thousand, five hundred six".