66400602 has 8 divisors (see below), whose sum is σ = 132801216. Its totient is φ = 22133532.

The previous prime is 66400601. The next prime is 66400627. The reversal of 66400602 is 20600466.

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

66400602 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (66400601) 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, 5533378 + ... + 5533389.

It is an arithmetic number, because the mean of its divisors is an integer number (16600152).

Almost surely, 2^66400602 is an apocalyptic number.

66400602 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66400602 is a wasteful number, since it uses less digits than its factorization.

66400602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11066772.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 66400602 is about 8148.6564536738. The cubic root of 66400602 is about 404.9399941581.

The spelling of 66400602 in words is "sixty-six million, four hundred thousand, six hundred two".