66495442 has 8 divisors (see below), whose sum is σ = 107415756. Its totient is φ = 30690192.

The previous prime is 66495439. The next prime is 66495493. The reversal of 66495442 is 24459466.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 58079641 + 8415801 = 7621^2 + 2901^2 .

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 = 66495395 and 66495404.

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, 1278733 + ... + 1278784.

Almost surely, 2^66495442 is an apocalyptic number.

66495442 is a deficient number, since it is larger than the sum of its proper divisors (40920314).

66495442 is a wasteful number, since it uses less digits than its factorization.

66495442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2557532.

The product of its digits is 207360, while the sum is 40.

The square root of 66495442 is about 8154.4737414501. The cubic root of 66495442 is about 405.1326944148.

The spelling of 66495442 in words is "sixty-six million, four hundred ninety-five thousand, four hundred forty-two".