654578334 has 48 divisors (see below), whose sum is σ = 1479983232. Its totient is φ = 216827928.

The previous prime is 654578297. The next prime is 654578341. The reversal of 654578334 is 433875456.

654578334 is a `hidden beast` number, since 6 + 545 + 78 + 3 + 34 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 654578334.

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, 75087 + ... + 83349.

It is an arithmetic number, because the mean of its divisors is an integer number (30832984).

Almost surely, 2^654578334 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654578334, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (739991616).

654578334 is an abundant number, since it is smaller than the sum of its proper divisors (825404898).

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

654578334 is a wasteful number, since it uses less digits than its factorization.

654578334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8443 (or 8431 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 45.

The square root of 654578334 is about 25584.7285309030. The cubic root of 654578334 is about 868.2681600832.

The spelling of 654578334 in words is "six hundred fifty-four million, five hundred seventy-eight thousand, three hundred thirty-four".