68249537 has 4 divisors (see below), whose sum is σ = 68283696. Its totient is φ = 68215380.

The previous prime is 68249527. The next prime is 68249609. The reversal of 68249537 is 73594286.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68249537 - 2⁴ = 68249521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68249527) 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, 13883 + ... + 18144.

It is an arithmetic number, because the mean of its divisors is an integer number (17070924).

Almost surely, 2^68249537 is an apocalyptic number.

It is an amenable number.

68249537 is a deficient number, since it is larger than the sum of its proper divisors (34159).

68249537 is a wasteful number, since it uses less digits than its factorization.

68249537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34158.

The product of its digits is 362880, while the sum is 44.

The square root of 68249537 is about 8261.3277988469. The cubic root of 68249537 is about 408.6641771640.

It can be divided in two parts, 68249 and 537, that added together give a palindrome (68786).

The spelling of 68249537 in words is "sixty-eight million, two hundred forty-nine thousand, five hundred thirty-seven".