66200402 has 8 divisors (see below), whose sum is σ = 99967500. Its totient is φ = 32877904.

The previous prime is 66200399. The next prime is 66200411. The reversal of 66200402 is 20400266.

66200402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 62236321 + 3964081 = 7889^2 + 1991^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110777 + ... + 111372.

Almost surely, 2^66200402 is an apocalyptic number.

66200402 is a deficient number, since it is larger than the sum of its proper divisors (33767098).

66200402 is a wasteful number, since it uses less digits than its factorization.

66200402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222300.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 66200402 is about 8136.3629466734. The cubic root of 66200402 is about 404.5326153274.

Adding to 66200402 its reverse (20400266), we get a palindrome (86600668).

The spelling of 66200402 in words is "sixty-six million, two hundred thousand, four hundred two".