8363640 has 32 divisors (see below), whose sum is σ = 25091280. Its totient is φ = 2230272.

The previous prime is 8363627. The next prime is 8363653. The reversal of 8363640 is 463638.

It is an interprime number because it is at equal distance from previous prime (8363627) and next prime (8363653).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 8363598 and 8363607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34729 + ... + 34968.

Almost surely, 2^8363640 is an apocalyptic number.

It is an amenable number.

8363640 is an abundant number, since it is smaller than the sum of its proper divisors (16727640).

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

8363640 is a wasteful number, since it uses less digits than its factorization.

8363640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69711 (or 69707 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 8363640 is about 2891.9958506194. The cubic root of 8363640 is about 202.9855441994.

The spelling of 8363640 in words is "eight million, three hundred sixty-three thousand, six hundred forty".