65440798 has 8 divisors (see below), whose sum is σ = 98196840. Its totient is φ = 32708520.

The previous prime is 65440763. The next prime is 65440799. The reversal of 65440798 is 89704456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65440799) 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, 4908 + ... + 12448.

It is an arithmetic number, because the mean of its divisors is an integer number (12274605).

Almost surely, 2^65440798 is an apocalyptic number.

65440798 is a deficient number, since it is larger than the sum of its proper divisors (32756042).

65440798 is a wasteful number, since it uses less digits than its factorization.

65440798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11882.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 65440798 is about 8089.5486895129. The cubic root of 65440798 is about 402.9794151139.

The spelling of 65440798 in words is "sixty-five million, four hundred forty thousand, seven hundred ninety-eight".