654117420 has 96 divisors (see below), whose sum is σ = 2005710336. Its totient is φ = 157964800.

The previous prime is 654117407. The next prime is 654117433. The reversal of 654117420 is 24711456.

654117420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (654117407) and next prime (654117433).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 183697 + ... + 187223.

It is an arithmetic number, because the mean of its divisors is an integer number (20892816).

Almost surely, 2^654117420 is an apocalyptic number.

654117420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654117420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1002855168).

654117420 is an abundant number, since it is smaller than the sum of its proper divisors (1351592916).

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

654117420 is a wasteful number, since it uses less digits than its factorization.

654117420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3831 (or 3829 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 654117420 is about 25575.7193447223. The cubic root of 654117420 is about 868.0643184658.

Adding to 654117420 its reverse (24711456), we get a palindrome (678828876).

The spelling of 654117420 in words is "six hundred fifty-four million, one hundred seventeen thousand, four hundred twenty".