655304540 has 96 divisors (see below), whose sum is σ = 1534740480. Its totient is φ = 234991680.

The previous prime is 655304537. The next prime is 655304579. The reversal of 655304540 is 45403556.

It is a super-2 number, since 2×655304540² = 858848080289223200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 655304497 and 655304506.

It is a congruent number.

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, 2741741 + ... + 2741979.

It is an arithmetic number, because the mean of its divisors is an integer number (15986880).

Almost surely, 2^655304540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655304540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (767370240).

655304540 is an abundant number, since it is smaller than the sum of its proper divisors (879435940).

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

655304540 is a wasteful number, since it uses less digits than its factorization.

655304540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 655304540 is about 25598.9167739574. The cubic root of 655304540 is about 868.5891344055.

The spelling of 655304540 in words is "six hundred fifty-five million, three hundred four thousand, five hundred forty".