65765642 has 4 divisors (see below), whose sum is σ = 98648466. Its totient is φ = 32882820.

The previous prime is 65765641. The next prime is 65765647. The reversal of 65765642 is 24656756.

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., 45144961 + 20620681 = 6719^2 + 4541^2 .

It is a super-3 number, since 3×65765642³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65765642.

It is not an unprimeable number, because it can be changed into a prime (65765641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16441409 + ... + 16441412.

Almost surely, 2^65765642 is an apocalyptic number.

65765642 is a deficient number, since it is larger than the sum of its proper divisors (32882824).

65765642 is a wasteful number, since it uses less digits than its factorization.

65765642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32882823.

The product of its digits is 302400, while the sum is 41.

The square root of 65765642 is about 8109.6018397946. The cubic root of 65765642 is about 403.6451029944.

The spelling of 65765642 in words is "sixty-five million, seven hundred sixty-five thousand, six hundred forty-two".