65667242 has 4 divisors (see below), whose sum is σ = 98500866. Its totient is φ = 32833620.

The previous prime is 65667233. The next prime is 65667253. The reversal of 65667242 is 24276656.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 65593801 + 73441 = 8099^2 + 271^2 .

It is a zygodrome in base 4.

It is a junction number, because it is equal to n+sod(n) for n = 65667196 and 65667205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16416809 + ... + 16416812.

Almost surely, 2^65667242 is an apocalyptic number.

65667242 is a deficient number, since it is larger than the sum of its proper divisors (32833624).

65667242 is a wasteful number, since it uses less digits than its factorization.

65667242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32833623.

The product of its digits is 120960, while the sum is 38.

The square root of 65667242 is about 8103.5326864276. The cubic root of 65667242 is about 403.4436882804.

The spelling of 65667242 in words is "sixty-five million, six hundred sixty-seven thousand, two hundred forty-two".