654778404 has 240 divisors, whose sum is σ = 2064240640. Its totient is φ = 177059520.

The previous prime is 654778393. The next prime is 654778459. The reversal of 654778404 is 404877456.

It is a self number, because there is not a number n which added to its sum of digits gives 654778404.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4710567 + ... + 4710705.

Almost surely, 2^654778404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654778404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1032120320).

654778404 is an abundant number, since it is smaller than the sum of its proper divisors (1409462236).

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

654778404 is a wasteful number, since it uses less digits than its factorization.

654778404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The square root of 654778404 is about 25588.6381818181. The cubic root of 654778404 is about 868.3566123006.

The spelling of 654778404 in words is "six hundred fifty-four million, seven hundred seventy-eight thousand, four hundred four".