556620012 has 60 divisors (see below), whose sum is σ = 1567058416. Its totient is φ = 171266400.

The previous prime is 556619981. The next prime is 556620019. The reversal of 556620012 is 210026655.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (556620019) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 61864 + ... + 70287.

Almost surely, 2^556620012 is an apocalyptic number.

556620012 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

556620012 is an abundant number, since it is smaller than the sum of its proper divisors (1010438404).

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

556620012 is a wasteful number, since it uses less digits than its factorization.

556620012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132180 (or 132169 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 556620012 is about 23592.7957648092. The cubic root of 556620012 is about 822.5953915410.

Adding to 556620012 its reverse (210026655), we get a palindrome (766646667).

The spelling of 556620012 in words is "five hundred fifty-six million, six hundred twenty thousand, twelve".