9781064 has 8 divisors (see below), whose sum is σ = 18339510. Its totient is φ = 4890528.

The previous prime is 9781063. The next prime is 9781073. The reversal of 9781064 is 4601879.

9781064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8168164 + 1612900 = 2858^2 + 1270^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (9781063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611309 + ... + 611324.

Almost surely, 2^9781064 is an apocalyptic number.

It is an amenable number.

9781064 is a deficient number, since it is larger than the sum of its proper divisors (8558446).

9781064 is a wasteful number, since it uses less digits than its factorization.

9781064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222639 (or 1222635 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 9781064 is about 3127.4692644373. The cubic root of 9781064 is about 213.8595753859.

The spelling of 9781064 in words is "nine million, seven hundred eighty-one thousand, sixty-four".