6662971400 has 24 divisors (see below), whose sum is σ = 15491408970. Its totient is φ = 2665188480.

The previous prime is 6662971349. The next prime is 6662971409. The reversal of 6662971400 is 41792666.

It can be written as a sum of positive squares in 3 ways, for example, as 5637306724 + 1025664676 = 75082^2 + 32026^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (6662971409) 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 5 ways as a sum of consecutive naturals, for example, 16657229 + ... + 16657628.

Almost surely, 2^6662971400 is an apocalyptic number.

It is an amenable number.

6662971400 is an abundant number, since it is smaller than the sum of its proper divisors (8828437570).

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

6662971400 is a wasteful number, since it uses less digits than its factorization.

6662971400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33314873 (or 33314864 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 6662971400 is about 81627.0261616825. The cubic root of 6662971400 is about 1881.7242555861.

The spelling of 6662971400 in words is "six billion, six hundred sixty-two million, nine hundred seventy-one thousand, four hundred".