655240146 has 64 divisors (see below), whose sum is σ = 1579585536. Its totient is φ = 178745600.

The previous prime is 655240133. The next prime is 655240177. The reversal of 655240146 is 641042556.

655240146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 13111 + ... + 38501.

It is an arithmetic number, because the mean of its divisors is an integer number (24681024).

Almost surely, 2^655240146 is an apocalyptic number.

655240146 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 655240146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (789792768).

655240146 is an abundant number, since it is smaller than the sum of its proper divisors (924345390).

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

655240146 is a wasteful number, since it uses less digits than its factorization.

655240146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25447.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 655240146 is about 25597.6589945253. The cubic root of 655240146 is about 868.5606826158.

The spelling of 655240146 in words is "six hundred fifty-five million, two hundred forty thousand, one hundred forty-six".