65918478 has 8 divisors (see below), whose sum is σ = 131836968. Its totient is φ = 21972824.

The previous prime is 65918453. The next prime is 65918507. The reversal of 65918478 is 87481956.

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

65918478 is an admirable number.

It is a congruent number.

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, 5493201 + ... + 5493212.

It is an arithmetic number, because the mean of its divisors is an integer number (16479621).

Almost surely, 2^65918478 is an apocalyptic number.

65918478 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.

65918478 is a wasteful number, since it uses less digits than its factorization.

65918478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10986418.

The product of its digits is 483840, while the sum is 48.

The square root of 65918478 is about 8119.0195220852. The cubic root of 65918478 is about 403.9575446351.

The spelling of 65918478 in words is "sixty-five million, nine hundred eighteen thousand, four hundred seventy-eight".