655000005 has 64 divisors (see below), whose sum is σ = 1182781440. Its totient is φ = 306796800.

The previous prime is 655000001. The next prime is 655000007. The reversal of 655000005 is 500000556.

It is not a de Polignac number, because 655000005 - 2² = 655000001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655000001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 593284 + ... + 594386.

It is an arithmetic number, because the mean of its divisors is an integer number (18480960).

Almost surely, 2^655000005 is an apocalyptic number.

It is an amenable number.

655000005 is a deficient number, since it is larger than the sum of its proper divisors (527781435).

655000005 is a wasteful number, since it uses less digits than its factorization.

655000005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 655000005 is about 25592.9678818225. The cubic root of 655000005 is about 868.4545624815.

The spelling of 655000005 in words is "six hundred fifty-five million, five", and thus it is an aban number.