68644310 has 32 divisors (see below), whose sum is σ = 141970752. Its totient is φ = 23408640.

The previous prime is 68644307. The next prime is 68644313. The reversal of 68644310 is 1344686.

It is an interprime number because it is at equal distance from previous prime (68644307) and next prime (68644313).

It is a super-2 number, since 2×68644310² = 9424082590752200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68644313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10970 + ... + 16050.

It is an arithmetic number, because the mean of its divisors is an integer number (4436586).

Almost surely, 2^68644310 is an apocalyptic number.

68644310 is an abundant number, since it is smaller than the sum of its proper divisors (73326442).

68644310 is a wasteful number, since it uses less digits than its factorization.

68644310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5288.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 68644310 is about 8285.1861777512. The cubic root of 68644310 is about 409.4506026289.

Adding to 68644310 its reverse (1344686), we get a palindrome (69988996).

The spelling of 68644310 in words is "sixty-eight million, six hundred forty-four thousand, three hundred ten".