68390357 has 4 divisors (see below), whose sum is σ = 78160416. Its totient is φ = 58620300.

The previous prime is 68390353. The next prime is 68390401. The reversal of 68390357 is 75309386.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68390357 - 2² = 68390353 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68390353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4885019 + ... + 4885032.

It is an arithmetic number, because the mean of its divisors is an integer number (19540104).

Almost surely, 2^68390357 is an apocalyptic number.

It is an amenable number.

68390357 is a deficient number, since it is larger than the sum of its proper divisors (9770059).

68390357 is an equidigital number, since it uses as much as digits as its factorization.

68390357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9770058.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 68390357 is about 8269.8462500823. The cubic root of 68390357 is about 408.9450511323.

The spelling of 68390357 in words is "sixty-eight million, three hundred ninety thousand, three hundred fifty-seven".