255066664 has 8 divisors (see below), whose sum is σ = 478250010. Its totient is φ = 127533328.

The previous prime is 255066661. The next prime is 255066683. The reversal of 255066664 is 466660552.

It can be written as a sum of positive squares in only one way, i.e., 241802500 + 13264164 = 15550^2 + 3642^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (255066661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15941659 + ... + 15941674.

Almost surely, 2^255066664 is an apocalyptic number.

It is an amenable number.

255066664 is a deficient number, since it is larger than the sum of its proper divisors (223183346).

255066664 is a wasteful number, since it uses less digits than its factorization.

255066664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31883339 (or 31883335 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 40.

The square root of 255066664 is about 15970.8066170748. The cubic root of 255066664 is about 634.1878256109.

The spelling of 255066664 in words is "two hundred fifty-five million, sixty-six thousand, six hundred sixty-four".