655538570 has 16 divisors (see below), whose sum is σ = 1242073440. Its totient is φ = 248414544.

The previous prime is 655538537. The next prime is 655538573. The reversal of 655538570 is 75835556.

It is not an unprimeable number, because it can be changed into a prime (655538573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1724912 + ... + 1725291.

It is an arithmetic number, because the mean of its divisors is an integer number (77629590).

Almost surely, 2^655538570 is an apocalyptic number.

655538570 is a deficient number, since it is larger than the sum of its proper divisors (586534870).

655538570 is a wasteful number, since it uses less digits than its factorization.

655538570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3450229.

The product of its (nonzero) digits is 630000, while the sum is 44.

The square root of 655538570 is about 25603.4874577664. The cubic root of 655538570 is about 868.6925223260.

The spelling of 655538570 in words is "six hundred fifty-five million, five hundred thirty-eight thousand, five hundred seventy".