8703649 has 4 divisors (see below), whose sum is σ = 8710164. Its totient is φ = 8697136.

The previous prime is 8703641. The next prime is 8703659. The reversal of 8703649 is 9463078.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9463078 = 2 ⋅4731539.

It can be written as a sum of positive squares in 2 ways, for example, as 3775249 + 4928400 = 1943^2 + 2220^2 .

It is a cyclic number.

It is not a de Polignac number, because 8703649 - 2³ = 8703641 is a prime.

It is a Duffinian number.

8703649 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8703641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442 + ... + 4195.

It is an arithmetic number, because the mean of its divisors is an integer number (2177541).

Almost surely, 2^8703649 is an apocalyptic number.

It is an amenable number.

8703649 is a deficient number, since it is larger than the sum of its proper divisors (6515).

8703649 is a wasteful number, since it uses less digits than its factorization.

8703649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6514.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 8703649 is about 2950.1947393350. The cubic root of 8703649 is about 205.6997621425.

The spelling of 8703649 in words is "eight million, seven hundred three thousand, six hundred forty-nine".