68618530 has 16 divisors (see below), whose sum is σ = 123684480. Its totient is φ = 27409392.

The previous prime is 68618527. The next prime is 68618533. The reversal of 68618530 is 3581686.

It is an interprime number because it is at equal distance from previous prime (68618527) and next prime (68618533).

It is a self number, because there is not a number n which added to its sum of digits gives 68618530.

It is not an unprimeable number, because it can be changed into a prime (68618533) 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, 3511 + ... + 12229.

It is an arithmetic number, because the mean of its divisors is an integer number (7730280).

Almost surely, 2^68618530 is an apocalyptic number.

68618530 is a deficient number, since it is larger than the sum of its proper divisors (55065950).

68618530 is a wasteful number, since it uses less digits than its factorization.

68618530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9513.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 68618530 is about 8283.6302428344. The cubic root of 68618530 is about 409.3993385681.

The spelling of 68618530 in words is "sixty-eight million, six hundred eighteen thousand, five hundred thirty".