555720066 has 48 divisors (see below), whose sum is σ = 1370640960. Its totient is φ = 161076960.

The previous prime is 555720047. The next prime is 555720149. The reversal of 555720066 is 660027555.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 555720066.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56461 + ... + 65568.

It is an arithmetic number, because the mean of its divisors is an integer number (28555020).

Almost surely, 2^555720066 is an apocalyptic number.

555720066 is an abundant number, since it is smaller than the sum of its proper divisors (814920894).

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

555720066 is a wasteful number, since it uses less digits than its factorization.

555720066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122071 (or 122068 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 555720066 is about 23573.7155747667. The cubic root of 555720066 is about 822.1518269643.

The spelling of 555720066 in words is "five hundred fifty-five million, seven hundred twenty thousand, sixty-six".