66652042 has 8 divisors (see below), whose sum is σ = 100141956. Its totient is φ = 33271392.

The previous prime is 66652039. The next prime is 66652043. The reversal of 66652042 is 24025666.

It can be written as a sum of positive squares in 2 ways, for example, as 48427681 + 18224361 = 6959^2 + 4269^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 66651995 and 66652013.

It is not an unprimeable number, because it can be changed into a prime (66652043) 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, 25773 + ... + 28240.

Almost surely, 2^66652042 is an apocalyptic number.

66652042 is a deficient number, since it is larger than the sum of its proper divisors (33489914).

66652042 is a wasteful number, since it uses less digits than its factorization.

66652042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54632.

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

The square root of 66652042 is about 8164.0701858815. The cubic root of 66652042 is about 405.4504808109.

The spelling of 66652042 in words is "sixty-six million, six hundred fifty-two thousand, forty-two".