654712146 has 160 divisors (see below), whose sum is σ = 1717657920. Its totient is φ = 184291200.

The previous prime is 654712139. The next prime is 654712147. The reversal of 654712146 is 641217456.

It is a self number, because there is not a number n which added to its sum of digits gives 654712146.

It is not an unprimeable number, because it can be changed into a prime (654712147) 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 79 ways as a sum of consecutive naturals, for example, 2065180 + ... + 2065496.

It is an arithmetic number, because the mean of its divisors is an integer number (10735362).

Almost surely, 2^654712146 is an apocalyptic number.

654712146 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 654712146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (858828960).

654712146 is an abundant number, since it is smaller than the sum of its proper divisors (1062945774).

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

654712146 is a wasteful number, since it uses less digits than its factorization.

654712146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 413 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 654712146 is about 25587.3434728969. The cubic root of 654712146 is about 868.3273212138.

The spelling of 654712146 in words is "six hundred fifty-four million, seven hundred twelve thousand, one hundred forty-six".