68611018 has 16 divisors (see below), whose sum is σ = 117725760. Its totient is φ = 29378016.

The previous prime is 68611009. The next prime is 68611019. The reversal of 68611018 is 81011686.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68611019) 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, 26673 + ... + 29131.

It is an arithmetic number, because the mean of its divisors is an integer number (7357860).

Almost surely, 2^68611018 is an apocalyptic number.

68611018 is a deficient number, since it is larger than the sum of its proper divisors (49114742).

68611018 is a wasteful number, since it uses less digits than its factorization.

68611018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4461.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 68611018 is about 8283.1768060328. The cubic root of 68611018 is about 409.3843983857.

The spelling of 68611018 in words is "sixty-eight million, six hundred eleven thousand, eighteen".