66601002 has 32 divisors (see below), whose sum is σ = 151889472. Its totient is φ = 19286784.

The previous prime is 66600991. The next prime is 66601009. The reversal of 66601002 is 20010666.

It is a self number, because there is not a number n which added to its sum of digits gives 66601002.

It is not an unprimeable number, because it can be changed into a prime (66601009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23788 + ... + 26439.

It is an arithmetic number, because the mean of its divisors is an integer number (4746546).

Almost surely, 2^66601002 is an apocalyptic number.

66601002 is an abundant number, since it is smaller than the sum of its proper divisors (85288470).

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

66601002 is a wasteful number, since it uses less digits than its factorization.

66601002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50262.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 66601002 is about 8160.9436954313. The cubic root of 66601002 is about 405.3469607162.

Adding to 66601002 its reverse (20010666), we get a palindrome (86611668).

The spelling of 66601002 in words is "sixty-six million, six hundred one thousand, two".