65295640 has 64 divisors (see below), whose sum is σ = 156958560. Its totient is φ = 24360960.

The previous prime is 65295613. The next prime is 65295649. The reversal of 65295640 is 4659256.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 65295640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65295649) 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, 88714 + ... + 89446.

Almost surely, 2^65295640 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 65295640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78479280).

65295640 is an abundant number, since it is smaller than the sum of its proper divisors (91662920).

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

65295640 is a wasteful number, since it uses less digits than its factorization.

65295640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 65295640 is about 8080.5717619485. The cubic root of 65295640 is about 402.6812372596.

The spelling of 65295640 in words is "sixty-five million, two hundred ninety-five thousand, six hundred forty".