68641763 has 4 divisors (see below), whose sum is σ = 68723088. Its totient is φ = 68560440.

The previous prime is 68641751. The next prime is 68641777. The reversal of 68641763 is 36714686.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68641763 - 2¹⁰ = 68640739 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68641763.

It is not an unprimeable number, because it can be changed into a prime (68641063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39383 + ... + 41088.

It is an arithmetic number, because the mean of its divisors is an integer number (17180772).

Almost surely, 2^68641763 is an apocalyptic number.

68641763 is a deficient number, since it is larger than the sum of its proper divisors (81325).

68641763 is an equidigital number, since it uses as much as digits as its factorization.

68641763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81324.

The product of its digits is 145152, while the sum is 41.

The square root of 68641763 is about 8285.0324682526. The cubic root of 68641763 is about 409.4455384384.

The spelling of 68641763 in words is "sixty-eight million, six hundred forty-one thousand, seven hundred sixty-three".