655904144 has 20 divisors (see below), whose sum is σ = 1452359424. Its totient is φ = 281101728.

The previous prime is 655904141. The next prime is 655904153. The reversal of 655904144 is 441409556.

It is a super-2 number, since 2×655904144² = 860420492232745472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 655904098 and 655904107.

It is not an unprimeable number, because it can be changed into a prime (655904141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2928032 + ... + 2928255.

Almost surely, 2^655904144 is an apocalyptic number.

It is an amenable number.

655904144 is an abundant number, since it is smaller than the sum of its proper divisors (796455280).

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

655904144 is a wasteful number, since it uses less digits than its factorization.

655904144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5856302 (or 5856296 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 655904144 is about 25610.6256073529. The cubic root of 655904144 is about 868.8539734847.

The spelling of 655904144 in words is "six hundred fifty-five million, nine hundred four thousand, one hundred forty-four".