68502655 has 16 divisors (see below), whose sum is σ = 90588960. Its totient is φ = 49408128.

The previous prime is 68502649. The next prime is 68502667. The reversal of 68502655 is 55620586.

It is a cyclic number.

It is not a de Polignac number, because 68502655 - 2³ = 68502647 is a prime.

It is a super-2 number, since 2×68502655² = 9385227484098050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9460 + ... + 15049.

It is an arithmetic number, because the mean of its divisors is an integer number (5661810).

Almost surely, 2^68502655 is an apocalyptic number.

68502655 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

68502655 is a deficient number, since it is larger than the sum of its proper divisors (22086305).

68502655 is a wasteful number, since it uses less digits than its factorization.

68502655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24570.

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 68502655 is about 8276.6330714850. The cubic root of 68502655 is about 409.1687600510.

The spelling of 68502655 in words is "sixty-eight million, five hundred two thousand, six hundred fifty-five".