68731465 has 16 divisors (see below), whose sum is σ = 90590400. Its totient is φ = 49645120.

The previous prime is 68731463. The next prime is 68731477. The reversal of 68731465 is 56413786.

It is a happy number.

It is not a de Polignac number, because 68731465 - 2¹ = 68731463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68731463) 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, 4002 + ... + 12388.

It is an arithmetic number, because the mean of its divisors is an integer number (5661900).

Almost surely, 2^68731465 is an apocalyptic number.

It is an amenable number.

68731465 is a deficient number, since it is larger than the sum of its proper divisors (21858935).

68731465 is a wasteful number, since it uses less digits than its factorization.

68731465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8552.

The product of its digits is 120960, while the sum is 40.

The square root of 68731465 is about 8290.4441979908. Note that the first 3 decimals coincide. The cubic root of 68731465 is about 409.6238171556.

It can be divided in two parts, 68731 and 465, that added together give a palindrome (69196).

The spelling of 68731465 in words is "sixty-eight million, seven hundred thirty-one thousand, four hundred sixty-five".