68644360 has 16 divisors (see below), whose sum is σ = 154449900. Its totient is φ = 27457728.

The previous prime is 68644357. The next prime is 68644369. The reversal of 68644360 is 6344686.

It can be written as a sum of positive squares in 2 ways, for example, as 61873956 + 6770404 = 7866^2 + 2602^2 .

It is not an unprimeable number, because it can be changed into a prime (68644369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 858015 + ... + 858094.

Almost surely, 2^68644360 is an apocalyptic number.

It is an amenable number.

68644360 is an abundant number, since it is smaller than the sum of its proper divisors (85805540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68644360 is a wasteful number, since it uses less digits than its factorization.

68644360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716120 (or 1716116 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 68644360 is about 8285.1891951844. The cubic root of 68644360 is about 409.4507020424.

The spelling of 68644360 in words is "sixty-eight million, six hundred forty-four thousand, three hundred sixty".