68705297732 has 12 divisors (see below), whose sum is σ = 120258386556. Its totient is φ = 34345758720.

The previous prime is 68705297701. The next prime is 68705297747. The reversal of 68705297732 is 23779250786.

It can be written as a sum of positive squares in 2 ways, for example, as 14461024516 + 54244273216 = 120254^2 + 232904^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1700069 + ... + 1740012.

It is an arithmetic number, because the mean of its divisors is an integer number (10021532213).

Almost surely, 2^68705297732 is an apocalyptic number.

It is an amenable number.

68705297732 is a deficient number, since it is larger than the sum of its proper divisors (51553088824).

68705297732 is a wasteful number, since it uses less digits than its factorization.

68705297732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3445078 (or 3445076 counting only the distinct ones).

The product of its (nonzero) digits is 8890560, while the sum is 56.

The spelling of 68705297732 in words is "sixty-eight billion, seven hundred five million, two hundred ninety-seven thousand, seven hundred thirty-two".