68610880837 has 4 divisors (see below), whose sum is σ = 68615072460. Its totient is φ = 68606689216.

The previous prime is 68610880783. The next prime is 68610880859. The reversal of 68610880837 is 73808801686.

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

It can be written as a sum of positive squares in 2 ways, for example, as 66671887681 + 1938993156 = 258209^2 + 44034^2 .

It is a cyclic number.

It is not a de Polignac number, because 68610880837 - 2²⁷ = 68476663109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68610880937) 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, 2071162 + ... + 2104027.

It is an arithmetic number, because the mean of its divisors is an integer number (17153768115).

Almost surely, 2^68610880837 is an apocalyptic number.

It is an amenable number.

68610880837 is a deficient number, since it is larger than the sum of its proper divisors (4191623).

68610880837 is a wasteful number, since it uses less digits than its factorization.

68610880837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4191622.

The product of its (nonzero) digits is 3096576, while the sum is 55.

The spelling of 68610880837 in words is "sixty-eight billion, six hundred ten million, eight hundred eighty thousand, eight hundred thirty-seven".