65495040 has 224 divisors, whose sum is σ = 231196896. Its totient is φ = 15728640.

The previous prime is 65495039. The next prime is 65495093. The reversal of 65495040 is 4059456.

It is a junction number, because it is equal to n+sod(n) for n = 65494992 and 65495010.

It is a congruent number.

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, 1597420 + ... + 1597460.

It is an arithmetic number, because the mean of its divisors is an integer number (1032129).

Almost surely, 2^65495040 is an apocalyptic number.

65495040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65495040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115598448).

65495040 is an abundant number, since it is smaller than the sum of its proper divisors (165701856).

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

65495040 is a wasteful number, since it uses less digits than its factorization.

65495040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 65495040 is about 8092.9005924946. The cubic root of 65495040 is about 403.0907237247.

The spelling of 65495040 in words is "sixty-five million, four hundred ninety-five thousand, forty".