7057721587 has 8 divisors (see below), whose sum is σ = 8085692000. Its totient is φ = 6034682304.

The previous prime is 7057721543. The next prime is 7057721617. The reversal of 7057721587 is 7851277507.

7057721587 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7057721587 - 2⁷ = 7057721459 is a prime.

It is a super-2 number, since 2×7057721587² = 99622867999211597138, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7057721587.

It is not an unprimeable number, because it can be changed into a prime (7057721507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1229712 + ... + 1235437.

It is an arithmetic number, because the mean of its divisors is an integer number (1010711500).

Almost surely, 2^7057721587 is an apocalyptic number.

7057721587 is a deficient number, since it is larger than the sum of its proper divisors (1027970413).

7057721587 is a wasteful number, since it uses less digits than its factorization.

7057721587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2465565.

The product of its (nonzero) digits is 960400, while the sum is 49.

The square root of 7057721587 is about 84010.2469166708. The cubic root of 7057721587 is about 1918.1747688640.

The spelling of 7057721587 in words is "seven billion, fifty-seven million, seven hundred twenty-one thousand, five hundred eighty-seven".