65647340 has 36 divisors (see below), whose sum is σ = 151537008. Its totient is φ = 23870880.

The previous prime is 65647339. The next prime is 65647343. The reversal of 65647340 is 4374656.

It is a self number, because there is not a number n which added to its sum of digits gives 65647340.

It is not an unprimeable number, because it can be changed into a prime (65647343) 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, 11144 + ... + 15983.

Almost surely, 2^65647340 is an apocalyptic number.

It is an amenable number.

65647340 is an abundant number, since it is smaller than the sum of its proper divisors (85889668).

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

65647340 is a wasteful number, since it uses less digits than its factorization.

65647340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27158 (or 27145 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 65647340 is about 8102.3046104180. The cubic root of 65647340 is about 403.4029264670.

The spelling of 65647340 in words is "sixty-five million, six hundred forty-seven thousand, three hundred forty".