654621632 has 28 divisors (see below), whose sum is σ = 1484589360. Its totient is φ = 280551936.

The previous prime is 654621631. The next prime is 654621641. The reversal of 654621632 is 236126456.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (28).

It is a junction number, because it is equal to n+sod(n) for n = 654621592 and 654621601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654621631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730157 + ... + 731052.

Almost surely, 2^654621632 is an apocalyptic number.

It is an amenable number.

654621632 is an abundant number, since it is smaller than the sum of its proper divisors (829967728).

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

654621632 is a wasteful number, since it uses less digits than its factorization.

654621632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461228 (or 1461218 counting only the distinct ones).

The product of its digits is 51840, while the sum is 35.

The square root of 654621632 is about 25585.5746857482. The cubic root of 654621632 is about 868.2873039320.

The spelling of 654621632 in words is "six hundred fifty-four million, six hundred twenty-one thousand, six hundred thirty-two".