8774721 has 6 divisors (see below), whose sum is σ = 12674610. Its totient is φ = 5849808.

The previous prime is 8774719. The next prime is 8774723. The reversal of 8774721 is 1274778.

It is an interprime number because it is at equal distance from previous prime (8774719) and next prime (8774723).

It can be written as a sum of positive squares in only one way, i.e., 5588496 + 3186225 = 2364^2 + 1785^2 .

It is not a de Polignac number, because 8774721 - 2¹ = 8774719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8774723) 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, 487476 + ... + 487493.

It is an arithmetic number, because the mean of its divisors is an integer number (2112435).

Almost surely, 2^8774721 is an apocalyptic number.

It is an amenable number.

8774721 is a deficient number, since it is larger than the sum of its proper divisors (3899889).

8774721 is a wasteful number, since it uses less digits than its factorization.

8774721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974975 (or 974972 counting only the distinct ones).

The product of its digits is 21952, while the sum is 36.

The square root of 8774721 is about 2962.2155559648. The cubic root of 8774721 is about 206.2581440310.

The spelling of 8774721 in words is "eight million, seven hundred seventy-four thousand, seven hundred twenty-one".