65400396 has 12 divisors (see below), whose sum is σ = 152600952. Its totient is φ = 21800128.

The previous prime is 65400347. The next prime is 65400397. The reversal of 65400396 is 69300456.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (65400397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2725005 + ... + 2725028.

It is an arithmetic number, because the mean of its divisors is an integer number (12716746).

Almost surely, 2^65400396 is an apocalyptic number.

It is an amenable number.

65400396 is an abundant number, since it is smaller than the sum of its proper divisors (87200556).

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

65400396 is a wasteful number, since it uses less digits than its factorization.

65400396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5450040 (or 5450038 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 65400396 is about 8087.0511312839. The cubic root of 65400396 is about 402.8964672356.

The spelling of 65400396 in words is "sixty-five million, four hundred thousand, three hundred ninety-six".