8517664 has 12 divisors (see below), whose sum is σ = 16769214. Its totient is φ = 4258816.

The previous prime is 8517661. The next prime is 8517671. The reversal of 8517664 is 4667158.

It can be written as a sum of positive squares in only one way, i.e., 7290000 + 1227664 = 2700^2 + 1108^2 .

It is not an unprimeable number, because it can be changed into a prime (8517661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133057 + ... + 133120.

Almost surely, 2^8517664 is an apocalyptic number.

It is an amenable number.

8517664 is a deficient number, since it is larger than the sum of its proper divisors (8251550).

8517664 is a wasteful number, since it uses less digits than its factorization.

8517664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266187 (or 266179 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 8517664 is about 2918.5037262268. The cubic root of 8517664 is about 204.2240266063.

It can be divided in two parts, 851 and 7664, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 8517664 in words is "eight million, five hundred seventeen thousand, six hundred sixty-four".