8267640 has 32 divisors (see below), whose sum is σ = 24803280. Its totient is φ = 2204672.

The previous prime is 8267591. The next prime is 8267647. The reversal of 8267640 is 467628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8267647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34329 + ... + 34568.

Almost surely, 2^8267640 is an apocalyptic number.

It is an amenable number.

8267640 is an abundant number, since it is smaller than the sum of its proper divisors (16535640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8267640 is a wasteful number, since it uses less digits than its factorization.

8267640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68911 (or 68907 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 8267640 is about 2875.3504134279. The cubic root of 8267640 is about 202.2059136083.

The spelling of 8267640 in words is "eight million, two hundred sixty-seven thousand, six hundred forty".