68452537 has 8 divisors (see below), whose sum is σ = 69136200. Its totient is φ = 67772160.

The previous prime is 68452529. The next prime is 68452543. The reversal of 68452537 is 73525486.

It can be written as a sum of positive squares in 4 ways, for example, as 76176 + 68376361 = 276^2 + 8269^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68452537 - 2³ = 68452529 is a prime.

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 68452537.

It is not an unprimeable number, because it can be changed into a prime (68452547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63987 + ... + 65047.

It is an arithmetic number, because the mean of its divisors is an integer number (8642025).

Almost surely, 2^68452537 is an apocalyptic number.

It is an amenable number.

68452537 is a deficient number, since it is larger than the sum of its proper divisors (683663).

68452537 is a wasteful number, since it uses less digits than its factorization.

68452537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643.

The product of its digits is 201600, while the sum is 40.

The square root of 68452537 is about 8273.6048370707. The cubic root of 68452537 is about 409.0689501823.

The spelling of 68452537 in words is "sixty-eight million, four hundred fifty-two thousand, five hundred thirty-seven".