2621606255 has 16 divisors (see below), whose sum is σ = 3172387680. Its totient is φ = 2079712128.

The previous prime is 2621606249. The next prime is 2621606287. The reversal of 2621606255 is 5526061262.

It is a cyclic number.

It is not a de Polignac number, because 2621606255 - 2¹⁸ = 2621344111 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329909 + ... + 337761.

It is an arithmetic number, because the mean of its divisors is an integer number (198274230).

Almost surely, 2^2621606255 is an apocalyptic number.

2621606255 is a deficient number, since it is larger than the sum of its proper divisors (550781425).

2621606255 is a wasteful number, since it uses less digits than its factorization.

2621606255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8410.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 2621606255 is about 51201.6235582428. The cubic root of 2621606255 is about 1378.8673502180.

The spelling of 2621606255 in words is "two billion, six hundred twenty-one million, six hundred six thousand, two hundred fifty-five".