65691242 has 12 divisors (see below), whose sum is σ = 100684770. Its totient is φ = 32144616.

The previous prime is 65691233. The next prime is 65691251. The reversal of 65691242 is 24219656.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (65691233) and next prime (65691251).

It can be written as a sum of positive squares in only one way, i.e., 61606801 + 4084441 = 7849^2 + 2021^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3017 + ... + 11852.

Almost surely, 2^65691242 is an apocalyptic number.

65691242 is a deficient number, since it is larger than the sum of its proper divisors (34993528).

65691242 is a wasteful number, since it uses less digits than its factorization.

65691242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14965 (or 14918 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 65691242 is about 8105.0133867872. The cubic root of 65691242 is about 403.4928323633.

The spelling of 65691242 in words is "sixty-five million, six hundred ninety-one thousand, two hundred forty-two".