65127940 has 12 divisors (see below), whose sum is σ = 136768716. Its totient is φ = 26051168.

The previous prime is 65127919. The next prime is 65127941. The reversal of 65127940 is 4972156.

It can be written as a sum of positive squares in 2 ways, for example, as 39967684 + 25160256 = 6322^2 + 5016^2 .

It is a junction number, because it is equal to n+sod(n) for n = 65127896 and 65127905.

It is not an unprimeable number, because it can be changed into a prime (65127941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1628179 + ... + 1628218.

It is an arithmetic number, because the mean of its divisors is an integer number (11397393).

Almost surely, 2^65127940 is an apocalyptic number.

It is an amenable number.

65127940 is an abundant number, since it is smaller than the sum of its proper divisors (71640776).

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

65127940 is a wasteful number, since it uses less digits than its factorization.

65127940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3256406 (or 3256404 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 65127940 is about 8070.1883497227. The cubic root of 65127940 is about 402.3362038155.

The spelling of 65127940 in words is "sixty-five million, one hundred twenty-seven thousand, nine hundred forty".