653317340 has 24 divisors (see below), whose sum is σ = 1477502880. Its totient is φ = 241224768.

The previous prime is 653317339. The next prime is 653317367. The reversal of 653317340 is 43713356.

It is a junction number, because it is equal to n+sod(n) for n = 653317297 and 653317306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1256120 + ... + 1256639.

It is an arithmetic number, because the mean of its divisors is an integer number (61562620).

Almost surely, 2^653317340 is an apocalyptic number.

It is an amenable number.

653317340 is an abundant number, since it is smaller than the sum of its proper divisors (824185540).

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

653317340 is a wasteful number, since it uses less digits than its factorization.

653317340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512781 (or 2512779 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 32.

The square root of 653317340 is about 25560.0731610847. The cubic root of 653317340 is about 867.7102514244.

The spelling of 653317340 in words is "six hundred fifty-three million, three hundred seventeen thousand, three hundred forty".