68655291 has 16 divisors (see below), whose sum is σ = 93649920. Its totient is φ = 44724960.

The previous prime is 68655289. The next prime is 68655319. The reversal of 68655291 is 19255686.

It is not a de Polignac number, because 68655291 - 2¹ = 68655289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68655211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30966 + ... + 33108.

It is an arithmetic number, because the mean of its divisors is an integer number (5853120).

Almost surely, 2^68655291 is an apocalyptic number.

68655291 is a deficient number, since it is larger than the sum of its proper divisors (24994629).

68655291 is a wasteful number, since it uses less digits than its factorization.

68655291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2386.

The product of its digits is 129600, while the sum is 42.

The square root of 68655291 is about 8285.8488400405. The cubic root of 68655291 is about 409.4724346755.

The spelling of 68655291 in words is "sixty-eight million, six hundred fifty-five thousand, two hundred ninety-one".