65646242 has 4 divisors (see below), whose sum is σ = 98469366. Its totient is φ = 32823120.

The previous prime is 65646241. The next prime is 65646247. The reversal of 65646242 is 24264656.

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 + 52441 = 8099^2 + 229^2 .

It is not an unprimeable number, because it can be changed into a prime (65646241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16411559 + ... + 16411562.

Almost surely, 2^65646242 is an apocalyptic number.

65646242 is a deficient number, since it is larger than the sum of its proper divisors (32823124).

65646242 is a wasteful number, since it uses less digits than its factorization.

65646242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32823123.

The product of its digits is 69120, while the sum is 35.

The square root of 65646242 is about 8102.2368516355. The cubic root of 65646242 is about 403.4006773844.

The spelling of 65646242 in words is "sixty-five million, six hundred forty-six thousand, two hundred forty-two".