66395542 has 8 divisors (see below), whose sum is σ = 99961632. Its totient is φ = 33075000.

The previous prime is 66395531. The next prime is 66395599. The reversal of 66395542 is 24559366.

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 = 66395495 and 66395504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60709 + ... + 61792.

It is an arithmetic number, because the mean of its divisors is an integer number (12495204).

Almost surely, 2^66395542 is an apocalyptic number.

66395542 is a deficient number, since it is larger than the sum of its proper divisors (33566090).

66395542 is a wasteful number, since it uses less digits than its factorization.

66395542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122774.

The product of its digits is 194400, while the sum is 40.

The square root of 66395542 is about 8148.3459671273. The cubic root of 66395542 is about 404.9297078637.

The spelling of 66395542 in words is "sixty-six million, three hundred ninety-five thousand, five hundred forty-two".