654293140 has 12 divisors (see below), whose sum is σ = 1374015636. Its totient is φ = 261717248.

The previous prime is 654293119. The next prime is 654293149. The reversal of 654293140 is 41392456.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 457788816 + 196504324 = 21396^2 + 14018^2 .

It is a junction number, because it is equal to n+sod(n) for n = 654293096 and 654293105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654293149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16357309 + ... + 16357348.

It is an arithmetic number, because the mean of its divisors is an integer number (114501303).

Almost surely, 2^654293140 is an apocalyptic number.

It is an amenable number.

654293140 is an abundant number, since it is smaller than the sum of its proper divisors (719722496).

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

654293140 is a wasteful number, since it uses less digits than its factorization.

654293140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32714666 (or 32714664 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 654293140 is about 25579.1544035373. The cubic root of 654293140 is about 868.1420428419.

The spelling of 654293140 in words is "six hundred fifty-four million, two hundred ninety-three thousand, one hundred forty".