139658068 has 24 divisors (see below), whose sum is σ = 267158304. Its totient is φ = 63352800.

The previous prime is 139658059. The next prime is 139658087. The reversal of 139658068 is 860856931.

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, 20871 + ... + 26737.

It is an arithmetic number, because the mean of its divisors is an integer number (11131596).

Almost surely, 2^139658068 is an apocalyptic number.

It is an amenable number.

139658068 is a deficient number, since it is larger than the sum of its proper divisors (127500236).

139658068 is a wasteful number, since it uses less digits than its factorization.

139658068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6423 (or 6421 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 139658068 is about 11817.7014685598. The cubic root of 139658068 is about 518.8263322522.

The spelling of 139658068 in words is "one hundred thirty-nine million, six hundred fifty-eight thousand, sixty-eight".