654321632 has 48 divisors (see below), whose sum is σ = 1306739952. Its totient is φ = 322483200.

The previous prime is 654321617. The next prime is 654321643. The reversal of 654321632 is 236123456.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1431548 + ... + 1432004.

It is an arithmetic number, because the mean of its divisors is an integer number (27223749).

Almost surely, 2^654321632 is an apocalyptic number.

It is an amenable number.

654321632 is a deficient number, since it is larger than the sum of its proper divisors (652418320).

654321632 is a wasteful number, since it uses less digits than its factorization.

654321632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011 (or 1003 counting only the distinct ones).

The product of its digits is 25920, while the sum is 32.

The square root of 654321632 is about 25579.7113353533. The cubic root of 654321632 is about 868.1546440969.

The spelling of 654321632 in words is "six hundred fifty-four million, three hundred twenty-one thousand, six hundred thirty-two".