65512650 has 96 divisors (see below), whose sum is σ = 190130688. Its totient is φ = 14616000.

The previous prime is 65512649. The next prime is 65512651. The reversal of 65512650 is 5621556.

It is an interprime number because it is at equal distance from previous prime (65512649) and next prime (65512651).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (65512651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44425 + ... + 45875.

It is an arithmetic number, because the mean of its divisors is an integer number (1980528).

Almost surely, 2^65512650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65512650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95065344).

65512650 is an abundant number, since it is smaller than the sum of its proper divisors (124618038).

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

65512650 is a wasteful number, since it uses less digits than its factorization.

65512650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516 (or 1511 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 65512650 is about 8093.9885099993. The cubic root of 65512650 is about 403.1268475368.

The spelling of 65512650 in words is "sixty-five million, five hundred twelve thousand, six hundred fifty".