66402602 has 16 divisors (see below), whose sum is σ = 113955072. Its totient is φ = 28427760.

The previous prime is 66402569. The next prime is 66402607. The reversal of 66402602 is 20620466.

It is not an unprimeable number, because it can be changed into a prime (66402607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15308 + ... + 19160.

It is an arithmetic number, because the mean of its divisors is an integer number (7122192).

Almost surely, 2^66402602 is an apocalyptic number.

66402602 is a deficient number, since it is larger than the sum of its proper divisors (47552470).

66402602 is a wasteful number, since it uses less digits than its factorization.

66402602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5093.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 66402602 is about 8148.7791723669. The cubic root of 66402602 is about 404.9440597430.

The spelling of 66402602 in words is "sixty-six million, four hundred two thousand, six hundred two".