65730400 has 36 divisors (see below), whose sum is σ = 160466292. Its totient is φ = 26291840.

The previous prime is 65730397. The next prime is 65730403. The reversal of 65730400 is 403756.

It is an interprime number because it is at equal distance from previous prime (65730397) and next prime (65730403).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65730403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40282 + ... + 41881.

It is an arithmetic number, because the mean of its divisors is an integer number (4457397).

Almost surely, 2^65730400 is an apocalyptic number.

It is an amenable number.

65730400 is an abundant number, since it is smaller than the sum of its proper divisors (94735892).

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

65730400 is a wasteful number, since it uses less digits than its factorization.

65730400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82183 (or 82170 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 65730400 is about 8107.4286922550. The cubic root of 65730400 is about 403.5729893394.

The spelling of 65730400 in words is "sixty-five million, seven hundred thirty thousand, four hundred".