3668551887 has 128 divisors (see below), whose sum is σ = 6822402048. Its totient is φ = 1692057600.

The previous prime is 3668551879. The next prime is 3668551889. The reversal of 3668551887 is 7881558663.

It is not a de Polignac number, because 3668551887 - 2³ = 3668551879 is a prime.

It is a super-2 number, since 2×3668551887² = 26916545895222521538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3668551889) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 15222087 + ... + 15222327.

It is an arithmetic number, because the mean of its divisors is an integer number (53300016).

Almost surely, 2^3668551887 is an apocalyptic number.

3668551887 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

3668551887 is a deficient number, since it is larger than the sum of its proper divisors (3153850161).

3668551887 is a wasteful number, since it uses less digits than its factorization.

3668551887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449.

The product of its digits is 9676800, while the sum is 57.

The square root of 3668551887 is about 60568.5717761283. The cubic root of 3668551887 is about 1542.2859017755.

It can be divided in two parts, 3668 and 551887, that added together give a palindrome (555555).

The spelling of 3668551887 in words is "three billion, six hundred sixty-eight million, five hundred fifty-one thousand, eight hundred eighty-seven".