65770044 has 12 divisors (see below), whose sum is σ = 153463464. Its totient is φ = 21923344.

The previous prime is 65770043. The next prime is 65770051. The reversal of 65770044 is 44007756.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 65769987 and 65770014.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2740407 + ... + 2740430.

It is an arithmetic number, because the mean of its divisors is an integer number (12788622).

Almost surely, 2^65770044 is an apocalyptic number.

It is an amenable number.

65770044 is an abundant number, since it is smaller than the sum of its proper divisors (87693420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65770044 is a wasteful number, since it uses less digits than its factorization.

65770044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5480844 (or 5480842 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 65770044 is about 8109.8732419194. The cubic root of 65770044 is about 403.6541087409.

The spelling of 65770044 in words is "sixty-five million, seven hundred seventy thousand, forty-four".