255404670 has 64 divisors (see below), whose sum is σ = 625708800. Its totient is φ = 66705408.

The previous prime is 255404657. The next prime is 255404683. The reversal of 255404670 is 76404552.

It is an interprime number because it is at equal distance from previous prime (255404657) and next prime (255404683).

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 in 31 ways as a sum of consecutive naturals, for example, 568606 + ... + 569054.

It is an arithmetic number, because the mean of its divisors is an integer number (9776700).

Almost surely, 2^255404670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255404670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312854400).

255404670 is an abundant number, since it is smaller than the sum of its proper divisors (370304130).

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

255404670 is a wasteful number, since it uses less digits than its factorization.

255404670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809.

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 255404670 is about 15981.3851089322. The cubic root of 255404670 is about 634.4678369475.

The spelling of 255404670 in words is "two hundred fifty-five million, four hundred four thousand, six hundred seventy".