65456478 has 48 divisors (see below), whose sum is σ = 150220080. Its totient is φ = 21111840.

The previous prime is 65456467. The next prime is 65456497. The reversal of 65456478 is 87465456.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 361548 + ... + 361728.

It is an arithmetic number, because the mean of its divisors is an integer number (3129585).

Almost surely, 2^65456478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65456478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75110040).

65456478 is an abundant number, since it is smaller than the sum of its proper divisors (84763602).

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

65456478 is a wasteful number, since it uses less digits than its factorization.

65456478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410 (or 223 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 65456478 is about 8090.5177831830. The cubic root of 65456478 is about 403.0115979561.

The spelling of 65456478 in words is "sixty-five million, four hundred fifty-six thousand, four hundred seventy-eight".