65501020 has 36 divisors (see below), whose sum is σ = 148954680. Its totient is φ = 24183744.

The previous prime is 65500993. The next prime is 65501021. The reversal of 65501020 is 2010556.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65501021) 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, 6310 + ... + 13069.

It is an arithmetic number, because the mean of its divisors is an integer number (4137630).

Almost surely, 2^65501020 is an apocalyptic number.

It is an amenable number.

65501020 is an abundant number, since it is smaller than the sum of its proper divisors (83453660).

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

65501020 is a wasteful number, since it uses less digits than its factorization.

65501020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19414 (or 19399 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 65501020 is about 8093.2700436844. The cubic root of 65501020 is about 403.1029913670.

Adding to 65501020 its reverse (2010556), we get a palindrome (67511576).

The spelling of 65501020 in words is "sixty-five million, five hundred one thousand, twenty".