654345432 has 128 divisors (see below), whose sum is σ = 1968960000. Its totient is φ = 200154240.

The previous prime is 654345403. The next prime is 654345437. The reversal of 654345432 is 234543456.

654345432 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654345437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 558207 + ... + 559377.

It is an arithmetic number, because the mean of its divisors is an integer number (15382500).

Almost surely, 2^654345432 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 654345432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (984480000).

654345432 is an abundant number, since it is smaller than the sum of its proper divisors (1314614568).

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

654345432 is a wasteful number, since it uses less digits than its factorization.

654345432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398 (or 1388 counting only the distinct ones).

The product of its digits is 172800, while the sum is 36.

The square root of 654345432 is about 25580.1765435659. The cubic root of 654345432 is about 868.1651699245.

Adding to 654345432 its reverse (234543456), we get a palindrome (888888888).

The spelling of 654345432 in words is "six hundred fifty-four million, three hundred forty-five thousand, four hundred thirty-two".