2656555654 has 4 divisors (see below), whose sum is σ = 3984833484. Its totient is φ = 1328277826.

The previous prime is 2656555619. The next prime is 2656555663. The reversal of 2656555654 is 4565556562.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2656555598 and 2656555607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664138912 + ... + 664138915.

It is an arithmetic number, because the mean of its divisors is an integer number (996208371).

Almost surely, 2^2656555654 is an apocalyptic number.

2656555654 is a deficient number, since it is larger than the sum of its proper divisors (1328277830).

2656555654 is a wasteful number, since it uses less digits than its factorization.

2656555654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328277829.

The product of its digits is 5400000, while the sum is 49.

The square root of 2656555654 is about 51541.7855142796. The cubic root of 2656555654 is about 1384.9676827380.

It can be divided in two parts, 2 and 656555654, that added together give a palindrome (656555656).

The spelling of 2656555654 in words is "two billion, six hundred fifty-six million, five hundred fifty-five thousand, six hundred fifty-four".