556665480 has 384 divisors, whose sum is σ = 2204668800. Its totient is φ = 124540416.

The previous prime is 556665463. The next prime is 556665491. The reversal of 556665480 is 84566655.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3545562 + ... + 3545718.

It is an arithmetic number, because the mean of its divisors is an integer number (5741325).

Almost surely, 2^556665480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 556665480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1102334400).

556665480 is an abundant number, since it is smaller than the sum of its proper divisors (1648003320).

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

556665480 is a wasteful number, since it uses less digits than its factorization.

556665480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The square root of 556665480 is about 23593.7593443690. The cubic root of 556665480 is about 822.6177890762.

The spelling of 556665480 in words is "five hundred fifty-six million, six hundred sixty-five thousand, four hundred eighty".