255653630 has 16 divisors (see below), whose sum is σ = 461309040. Its totient is φ = 102009792.

The previous prime is 255653617. The next prime is 255653641. The reversal of 255653630 is 36356552.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27164 + ... + 35343.

It is an arithmetic number, because the mean of its divisors is an integer number (28831815).

Almost surely, 2^255653630 is an apocalyptic number.

255653630 is a deficient number, since it is larger than the sum of its proper divisors (205655410).

255653630 is a wasteful number, since it uses less digits than its factorization.

255653630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62923.

The product of its (nonzero) digits is 81000, while the sum is 35.

The square root of 255653630 is about 15989.1722737608. The cubic root of 255653630 is about 634.6739227337.

The spelling of 255653630 in words is "two hundred fifty-five million, six hundred fifty-three thousand, six hundred thirty".