68340555 has 12 divisors (see below), whose sum is σ = 118457040. Its totient is φ = 36448272.

The previous prime is 68340551. The next prime is 68340581. The reversal of 68340555 is 55504386.

68340555 is a `hidden beast` number, since 68 + 3 + 40 + 555 = 666.

It is not a de Polignac number, because 68340555 - 2² = 68340551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68340551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 759295 + ... + 759384.

It is an arithmetic number, because the mean of its divisors is an integer number (9871420).

Almost surely, 2^68340555 is an apocalyptic number.

68340555 is a deficient number, since it is larger than the sum of its proper divisors (50116485).

68340555 is a wasteful number, since it uses less digits than its factorization.

68340555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518690 (or 1518687 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 68340555 is about 8266.8346421106. The cubic root of 68340555 is about 408.8457621491.

The spelling of 68340555 in words is "sixty-eight million, three hundred forty thousand, five hundred fifty-five".