7021064880 has 80 divisors (see below), whose sum is σ = 24183675360. Its totient is φ = 1872283392.

The previous prime is 7021064863. The next prime is 7021064899. The reversal of 7021064880 is 884601207.

7021064880 is a `hidden beast` number, since 7 + 0 + 2 + 1 + 0 + 648 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1623087 + ... + 1627406.

It is an arithmetic number, because the mean of its divisors is an integer number (302295942).

Almost surely, 2^7021064880 is an apocalyptic number.

It is an amenable number.

7021064880 is an abundant number, since it is smaller than the sum of its proper divisors (17162610480).

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

7021064880 is a wasteful number, since it uses less digits than its factorization.

7021064880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3250515 (or 3250503 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 7021064880 is about 83791.7948250305. The cubic root of 7021064880 is about 1914.8481024435.

The spelling of 7021064880 in words is "seven billion, twenty-one million, sixty-four thousand, eight hundred eighty".