65128070 has 32 divisors (see below), whose sum is σ = 134265600. Its totient is φ = 22281696.

The previous prime is 65128061. The next prime is 65128073. The reversal of 65128070 is 7082156.

65128070 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65128073) 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 15 ways as a sum of consecutive naturals, for example, 51101 + ... + 52359.

It is an arithmetic number, because the mean of its divisors is an integer number (4195800).

Almost surely, 2^65128070 is an apocalyptic number.

65128070 is an abundant number, since it is smaller than the sum of its proper divisors (69137530).

65128070 is a wasteful number, since it uses less digits than its factorization.

65128070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 65128070 is about 8070.1964040536. The cubic root of 65128070 is about 402.3364715125.

The spelling of 65128070 in words is "sixty-five million, one hundred twenty-eight thousand, seventy".