8640366 has 24 divisors (see below), whose sum is σ = 20102760. Its totient is φ = 2468592.

The previous prime is 8640349. The next prime is 8640391. The reversal of 8640366 is 6630468.

It is a super-2 number, since 2×8640366² = 149311849227912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14401 + ... + 14988.

It is an arithmetic number, because the mean of its divisors is an integer number (837615).

Almost surely, 2^8640366 is an apocalyptic number.

8640366 is an abundant number, since it is smaller than the sum of its proper divisors (11462394).

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

8640366 is a wasteful number, since it uses less digits than its factorization.

8640366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29408 (or 29401 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 8640366 is about 2939.4499485448. The cubic root of 8640366 is about 205.2000110195.

The spelling of 8640366 in words is "eight million, six hundred forty thousand, three hundred sixty-six".