8749864 has 8 divisors (see below), whose sum is σ = 16406010. Its totient is φ = 4374928.

The previous prime is 8749847. The next prime is 8749891. The reversal of 8749864 is 4689478.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8749764 + 100 = 2958^2 + 10^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 546859 + ... + 546874.

Almost surely, 2^8749864 is an apocalyptic number.

It is an amenable number.

8749864 is a deficient number, since it is larger than the sum of its proper divisors (7656146).

8749864 is a wasteful number, since it uses less digits than its factorization.

8749864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093739 (or 1093735 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 8749864 is about 2958.0169032648. The cubic root of 8749864 is about 206.0631973758.

The spelling of 8749864 in words is "eight million, seven hundred forty-nine thousand, eight hundred sixty-four".