66052642 has 16 divisors (see below), whose sum is σ = 103560192. Its totient is φ = 31537440.

The previous prime is 66052639. The next prime is 66052643. The reversal of 66052642 is 24625066.

It is not an unprimeable number, because it can be changed into a prime (66052643) 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, 49342 + ... + 50662.

It is an arithmetic number, because the mean of its divisors is an integer number (6472512).

Almost surely, 2^66052642 is an apocalyptic number.

66052642 is a deficient number, since it is larger than the sum of its proper divisors (37507550).

66052642 is a wasteful number, since it uses less digits than its factorization.

66052642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2433.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 66052642 is about 8127.2776499883. The cubic root of 66052642 is about 404.2314174267.

The spelling of 66052642 in words is "sixty-six million, fifty-two thousand, six hundred forty-two".