65404388 has 12 divisors (see below), whose sum is σ = 130808832. Its totient is φ = 28030440.

The previous prime is 65404373. The next prime is 65404397. The reversal of 65404388 is 88340456.

It is a happy number.

65404388 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1167908 + ... + 1167963.

It is an arithmetic number, because the mean of its divisors is an integer number (10900736).

Almost surely, 2^65404388 is an apocalyptic number.

It is an amenable number.

65404388 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

65404388 is a wasteful number, since it uses less digits than its factorization.

65404388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2335882 (or 2335880 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 65404388 is about 8087.2979418345. The cubic root of 65404388 is about 402.9046645864.

The spelling of 65404388 in words is "sixty-five million, four hundred four thousand, three hundred eighty-eight".