9062721 has 6 divisors (see below), whose sum is σ = 13090610. Its totient is φ = 6041808.

The previous prime is 9062719. The next prime is 9062737. The reversal of 9062721 is 1272609.

It can be written as a sum of positive squares in only one way, i.e., 7535025 + 1527696 = 2745^2 + 1236^2 .

It is not a de Polignac number, because 9062721 - 2¹ = 9062719 is a prime.

It is a Duffinian number.

9062721 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9062741) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 503476 + ... + 503493.

Almost surely, 2^9062721 is an apocalyptic number.

It is an amenable number.

9062721 is a deficient number, since it is larger than the sum of its proper divisors (4027889).

9062721 is a wasteful number, since it uses less digits than its factorization.

9062721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006975 (or 1006972 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 9062721 is about 3010.4353505764. The cubic root of 9062721 is about 208.4904676214.

The spelling of 9062721 in words is "nine million, sixty-two thousand, seven hundred twenty-one".