68379551 has 2 divisors, whose sum is σ = 68379552. Its totient is φ = 68379550.

The previous prime is 68379547. The next prime is 68379599. The reversal of 68379551 is 15597386.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68379551 - 2² = 68379547 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68369551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34189775 + 34189776.

It is an arithmetic number, because the mean of its divisors is an integer number (34189776).

Almost surely, 2^68379551 is an apocalyptic number.

68379551 is a deficient number, since it is larger than the sum of its proper divisors (1).

68379551 is an equidigital number, since it uses as much as digits as its factorization.

68379551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 44.

The square root of 68379551 is about 8269.1928868542. The cubic root of 68379551 is about 408.9235115801.

The spelling of 68379551 in words is "sixty-eight million, three hundred seventy-nine thousand, five hundred fifty-one".