7021640466 has 16 divisors (see below), whose sum is σ = 15603645600. Its totient is φ = 2340546804.

The previous prime is 7021640459. The next prime is 7021640489. The reversal of 7021640466 is 6640461207.

7021640466 is a `hidden beast` number, since 7 + 0 + 2 + 1 + 640 + 4 + 6 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 7021640466.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65015136 + ... + 65015243.

It is an arithmetic number, because the mean of its divisors is an integer number (975227850).

Almost surely, 2^7021640466 is an apocalyptic number.

7021640466 is an abundant number, since it is smaller than the sum of its proper divisors (8582005134).

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

7021640466 is a wasteful number, since it uses less digits than its factorization.

7021640466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130030390 (or 130030384 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 7021640466 is about 83795.2293749471. The cubic root of 7021640466 is about 1914.9004273477.

The spelling of 7021640466 in words is "seven billion, twenty-one million, six hundred forty thousand, four hundred sixty-six".