65001400 has 48 divisors (see below), whose sum is σ = 154833840. Its totient is φ = 25363200.

The previous prime is 65001379. The next prime is 65001401. The reversal of 65001400 is 410056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65001401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4237 + ... + 12163.

It is an arithmetic number, because the mean of its divisors is an integer number (3225705).

Almost surely, 2^65001400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65001400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77416920).

65001400 is an abundant number, since it is smaller than the sum of its proper divisors (89832440).

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

65001400 is a wasteful number, since it uses less digits than its factorization.

65001400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7984 (or 7975 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 65001400 is about 8062.3445721453. The cubic root of 65001400 is about 402.0754625131.

Adding to 65001400 its reverse (410056), we get a palindrome (65411456).

The spelling of 65001400 in words is "sixty-five million, one thousand, four hundred".