65706438 has 32 divisors (see below), whose sum is σ = 151070976. Its totient is φ = 18662688.

The previous prime is 65706437. The next prime is 65706457. The reversal of 65706438 is 83460756.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 65706396 and 65706405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65706437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2745 + ... + 11787.

It is an arithmetic number, because the mean of its divisors is an integer number (4720968).

Almost surely, 2^65706438 is an apocalyptic number.

65706438 is an abundant number, since it is smaller than the sum of its proper divisors (85364538).

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

65706438 is a wasteful number, since it uses less digits than its factorization.

65706438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9228.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 65706438 is about 8105.9507770526. The cubic root of 65706438 is about 403.5239425700.

The spelling of 65706438 in words is "sixty-five million, seven hundred six thousand, four hundred thirty-eight".