654040992 has 96 divisors (see below), whose sum is σ = 1877770944. Its totient is φ = 197683200.

The previous prime is 654040987. The next prime is 654040993. The reversal of 654040992 is 299040456.

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 654040992.

It is not an unprimeable number, because it can be changed into a prime (654040993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 697548 + ... + 698484.

It is an arithmetic number, because the mean of its divisors is an integer number (19560114).

Almost surely, 2^654040992 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 654040992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (938885472).

654040992 is an abundant number, since it is smaller than the sum of its proper divisors (1223729952).

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

654040992 is a wasteful number, since it uses less digits than its factorization.

654040992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1622 (or 1614 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 654040992 is about 25574.2251495524. The cubic root of 654040992 is about 868.0305085301.

The spelling of 654040992 in words is "six hundred fifty-four million, forty thousand, nine hundred ninety-two".