66625002 has 24 divisors (see below), whose sum is σ = 145117440. Its totient is φ = 22090920.

The previous prime is 66624967. The next prime is 66625007. The reversal of 66625002 is 20052666.

It is not an unprimeable number, because it can be changed into a prime (66625007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6252 + ... + 13127.

It is an arithmetic number, because the mean of its divisors is an integer number (6046560).

Almost surely, 2^66625002 is an apocalyptic number.

66625002 is an abundant number, since it is smaller than the sum of its proper divisors (78492438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66625002 is a wasteful number, since it uses less digits than its factorization.

66625002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19578 (or 19575 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 66625002 is about 8162.4139811700. The cubic root of 66625002 is about 405.3956444619.

Adding to 66625002 its reverse (20052666), we get a palindrome (86677668).

It can be divided in two parts, 6662 and 5002, that added together give a square (11664 = 108²).

The spelling of 66625002 in words is "sixty-six million, six hundred twenty-five thousand, two".