9067487721 has 8 divisors (see below), whose sum is σ = 12093583584. Its totient is φ = 6043191840.

The previous prime is 9067487713. The next prime is 9067487729. The reversal of 9067487721 is 1277847609.

It is an interprime number because it is at equal distance from previous prime (9067487713) and next prime (9067487729).

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

It is not a de Polignac number, because 9067487721 - 2³ = 9067487713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9067487729) 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, 438196 + ... + 458421.

It is an arithmetic number, because the mean of its divisors is an integer number (1511697948).

Almost surely, 2^9067487721 is an apocalyptic number.

It is an amenable number.

9067487721 is a deficient number, since it is larger than the sum of its proper divisors (3026095863).

9067487721 is a wasteful number, since it uses less digits than its factorization.

9067487721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899991.

The product of its (nonzero) digits is 1185408, while the sum is 51.

The square root of 9067487721 is about 95223.3570139175. The cubic root of 9067487721 is about 2085.2701447093.

The spelling of 9067487721 in words is "nine billion, sixty-seven million, four hundred eighty-seven thousand, seven hundred twenty-one".