3556806990 has 64 divisors (see below), whose sum is σ = 9539534592. Its totient is φ = 841222400.

The previous prime is 3556806937. The next prime is 3556806991. The reversal of 3556806990 is 996086553.

It is a super-2 number, since 2×3556806990² = 25301751928225720200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3556806991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117912 + ... + 144971.

It is an arithmetic number, because the mean of its divisors is an integer number (149055228).

Almost surely, 2^3556806990 is an apocalyptic number.

3556806990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3556806990 is an abundant number, since it is smaller than the sum of its proper divisors (5982727602).

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

3556806990 is a wasteful number, since it uses less digits than its factorization.

3556806990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262945.

The product of its (nonzero) digits is 1749600, while the sum is 51.

The square root of 3556806990 is about 59638.9720736365. The cubic root of 3556806990 is about 1526.4647025874.

The spelling of 3556806990 in words is "three billion, five hundred fifty-six million, eight hundred six thousand, nine hundred ninety".