68753137 has 4 divisors (see below), whose sum is σ = 70050420. Its totient is φ = 67455856.

The previous prime is 68753099. The next prime is 68753143. The reversal of 68753137 is 73135786.

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 55965361 + 12787776 = 7481^2 + 3576^2 .

It is not a de Polignac number, because 68753137 - 2¹⁵ = 68720369 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68753137.

It is not an unprimeable number, because it can be changed into a prime (68753177) 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, 648562 + ... + 648667.

It is an arithmetic number, because the mean of its divisors is an integer number (17512605).

Almost surely, 2^68753137 is an apocalyptic number.

It is an amenable number.

68753137 is a deficient number, since it is larger than the sum of its proper divisors (1297283).

68753137 is a wasteful number, since it uses less digits than its factorization.

68753137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297282.

The product of its digits is 105840, while the sum is 40.

The square root of 68753137 is about 8291.7511419482. The cubic root of 68753137 is about 409.6668660197. Note that the first 3 decimals are identical.

It can be divided in two parts, 687 and 53137, that added together give a square (53824 = 232²).

The spelling of 68753137 in words is "sixty-eight million, seven hundred fifty-three thousand, one hundred thirty-seven".