65120650 has 48 divisors (see below), whose sum is σ = 140544576. Its totient is φ = 21985920.

The previous prime is 65120639. The next prime is 65120651. The reversal of 65120650 is 5602156.

65120650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (65120651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22062 + ... + 24838.

It is an arithmetic number, because the mean of its divisors is an integer number (2928012).

Almost surely, 2^65120650 is an apocalyptic number.

65120650 is an abundant number, since it is smaller than the sum of its proper divisors (75423926).

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

65120650 is a wasteful number, since it uses less digits than its factorization.

65120650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2863 (or 2858 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 65120650 is about 8069.7366747621. The cubic root of 65120650 is about 402.3211916186.

The spelling of 65120650 in words is "sixty-five million, one hundred twenty thousand, six hundred fifty".