655298140 has 24 divisors (see below), whose sum is σ = 1572715872. Its totient is φ = 224673600.

The previous prime is 655298117. The next prime is 655298143. The reversal of 655298140 is 41892556.

655298140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 655298093 and 655298102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655298143) 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, 2340211 + ... + 2340490.

It is an arithmetic number, because the mean of its divisors is an integer number (65529828).

Almost surely, 2^655298140 is an apocalyptic number.

It is an amenable number.

655298140 is an abundant number, since it is smaller than the sum of its proper divisors (917417732).

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

655298140 is a wasteful number, since it uses less digits than its factorization.

655298140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4680717 (or 4680715 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 655298140 is about 25598.7917683628. The cubic root of 655298140 is about 868.5863067184.

The spelling of 655298140 in words is "six hundred fifty-five million, two hundred ninety-eight thousand, one hundred forty".