68748397 has 4 divisors (see below), whose sum is σ = 68774940. Its totient is φ = 68721856.

The previous prime is 68748373. The next prime is 68748413. The reversal of 68748397 is 79384786.

It is a happy number.

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 61246276 + 7502121 = 7826^2 + 2739^2 .

It is a cyclic number.

It is not a de Polignac number, because 68748397 - 2¹⁵ = 68715629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68743397) 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, 8908 + ... + 14725.

It is an arithmetic number, because the mean of its divisors is an integer number (17193735).

Almost surely, 2^68748397 is an apocalyptic number.

It is an amenable number.

68748397 is a deficient number, since it is larger than the sum of its proper divisors (26543).

68748397 is a wasteful number, since it uses less digits than its factorization.

68748397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26542.

The product of its digits is 2032128, while the sum is 52.

The square root of 68748397 is about 8291.4653107880. The cubic root of 68748397 is about 409.6574513435.

The spelling of 68748397 in words is "sixty-eight million, seven hundred forty-eight thousand, three hundred ninety-seven".