65770042 has 24 divisors (see below), whose sum is σ = 112874076. Its totient is φ = 28566528.

The previous prime is 65769983. The next prime is 65770043. The reversal of 65770042 is 24007756.

It can be written as a sum of positive squares in 6 ways, for example, as 51998521 + 13771521 = 7211^2 + 3711^2 .

It is a junction number, because it is equal to n+sod(n) for n = 65769986 and 65770013.

It is not an unprimeable number, because it can be changed into a prime (65770043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3138 + ... + 11890.

Almost surely, 2^65770042 is an apocalyptic number.

65770042 is a deficient number, since it is larger than the sum of its proper divisors (47104034).

65770042 is a wasteful number, since it uses less digits than its factorization.

65770042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8802 (or 8785 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 65770042 is about 8109.8731186129. The cubic root of 65770042 is about 403.6541046494.

Adding to 65770042 its reverse (24007756), we get a palindrome (89777798).

The spelling of 65770042 in words is "sixty-five million, seven hundred seventy thousand, forty-two".