65706636 has 48 divisors (see below), whose sum is σ = 163103360. Its totient is φ = 20528640.

The previous prime is 65706629. The next prime is 65706647. The reversal of 65706636 is 63660756.

It is a junction number, because it is equal to n+sod(n) for n = 65706594 and 65706603.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20631 + ... + 23601.

Almost surely, 2^65706636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65706636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81551680).

65706636 is an abundant number, since it is smaller than the sum of its proper divisors (97396724).

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

65706636 is a wasteful number, since it uses less digits than its factorization.

65706636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3094 (or 3092 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 39.

The square root of 65706636 is about 8105.9629902930. The cubic root of 65706636 is about 403.5243478964.

The spelling of 65706636 in words is "sixty-five million, seven hundred six thousand, six hundred thirty-six".