65478860 has 24 divisors (see below), whose sum is σ = 138211920. Its totient is φ = 26057024.

The previous prime is 65478859. The next prime is 65478871. The reversal of 65478860 is 6887456.

65478860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65478860² = 8574962213799200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4370 + ... + 12249.

It is an arithmetic number, because the mean of its divisors is an integer number (5758830).

Almost surely, 2^65478860 is an apocalyptic number.

It is an amenable number.

65478860 is an abundant number, since it is smaller than the sum of its proper divisors (72733060).

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

65478860 is a wasteful number, since it uses less digits than its factorization.

65478860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16825 (or 16823 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 65478860 is about 8091.9008891607. The cubic root of 65478860 is about 403.0575275974.

The spelling of 65478860 in words is "sixty-five million, four hundred seventy-eight thousand, eight hundred sixty".