654356538 has 48 divisors (see below), whose sum is σ = 1548364896. Its totient is φ = 198071520.

The previous prime is 654356473. The next prime is 654356543. The reversal of 654356538 is 835653456.

654356538 is a `hidden beast` number, since 6 + 54 + 3 + 565 + 38 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 654356493 and 654356502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 342181 + ... + 344087.

It is an arithmetic number, because the mean of its divisors is an integer number (32257602).

Almost surely, 2^654356538 is an apocalyptic number.

654356538 is an abundant number, since it is smaller than the sum of its proper divisors (894008358).

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

654356538 is a wasteful number, since it uses less digits than its factorization.

654356538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3659 (or 3656 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 45.

The square root of 654356538 is about 25580.3936248057. The cubic root of 654356538 is about 868.1700815951.

The spelling of 654356538 in words is "six hundred fifty-four million, three hundred fifty-six thousand, five hundred thirty-eight".