655116540 has 96 divisors (see below), whose sum is σ = 1997835840. Its totient is φ = 159430656.

The previous prime is 655116529. The next prime is 655116541. The reversal of 655116540 is 45611556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655116541) 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, 64702 + ... + 74138.

It is an arithmetic number, because the mean of its divisors is an integer number (20810790).

Almost surely, 2^655116540 is an apocalyptic number.

655116540 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 655116540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (998917920).

655116540 is an abundant number, since it is smaller than the sum of its proper divisors (1342719300).

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

655116540 is a wasteful number, since it uses less digits than its factorization.

655116540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9551 (or 9549 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 655116540 is about 25595.2444801764. The cubic root of 655116540 is about 868.5060634231.

The spelling of 655116540 in words is "six hundred fifty-five million, one hundred sixteen thousand, five hundred forty".