65813628 has 12 divisors (see below), whose sum is σ = 153565160. Its totient is φ = 21937872.

The previous prime is 65813623. The next prime is 65813633. The reversal of 65813628 is 82631856.

It is a happy number.

65813628 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (65813623) and next prime (65813633).

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

65813628 is strictly pandigital in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65813623) 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, 2742223 + ... + 2742246.

Almost surely, 2^65813628 is an apocalyptic number.

It is an amenable number.

65813628 is an abundant number, since it is smaller than the sum of its proper divisors (87751532).

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

65813628 is a wasteful number, since it uses less digits than its factorization.

65813628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5484476 (or 5484474 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 65813628 is about 8112.5598919207. The cubic root of 65813628 is about 403.7432525463.

The spelling of 65813628 in words is "sixty-five million, eight hundred thirteen thousand, six hundred twenty-eight".