1655656506 has 96 divisors (see below), whose sum is σ = 4279661568. Its totient is φ = 452724480.

The previous prime is 1655656493. The next prime is 1655656511. The reversal of 1655656506 is 6056565561.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 270775 + ... + 276821.

It is an arithmetic number, because the mean of its divisors is an integer number (44579808).

Almost surely, 2^1655656506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1655656506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2139830784).

1655656506 is an abundant number, since it is smaller than the sum of its proper divisors (2624005062).

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

1655656506 is a wasteful number, since it uses less digits than its factorization.

1655656506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6156 (or 6153 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The square root of 1655656506 is about 40689.7592275993. The cubic root of 1655656506 is about 1183.0145334596.

The spelling of 1655656506 in words is "one billion, six hundred fifty-five million, six hundred fifty-six thousand, five hundred six".