68631398 has 16 divisors (see below), whose sum is σ = 112651344. Its totient is φ = 31100160.

The previous prime is 68631391. The next prime is 68631403. The reversal of 68631398 is 89313686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68631391) 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, 2786 + ... + 12042.

It is an arithmetic number, because the mean of its divisors is an integer number (7040709).

Almost surely, 2^68631398 is an apocalyptic number.

68631398 is a deficient number, since it is larger than the sum of its proper divisors (44019946).

68631398 is a wasteful number, since it uses less digits than its factorization.

68631398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9607.

The product of its digits is 186624, while the sum is 44.

The square root of 68631398 is about 8284.4069190256. The cubic root of 68631398 is about 409.4249284557.

The spelling of 68631398 in words is "sixty-eight million, six hundred thirty-one thousand, three hundred ninety-eight".