68340737 has 4 divisors (see below), whose sum is σ = 69360816. Its totient is φ = 67320660.

The previous prime is 68340683. The next prime is 68340749. The reversal of 68340737 is 73704386.

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 68340737 - 2⁶ = 68340673 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 68340737.

It is not an unprimeable number, because it can be changed into a prime (68340757) 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, 509939 + ... + 510072.

It is an arithmetic number, because the mean of its divisors is an integer number (17340204).

Almost surely, 2^68340737 is an apocalyptic number.

68340737 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

68340737 is a deficient number, since it is larger than the sum of its proper divisors (1020079).

68340737 is a wasteful number, since it uses less digits than its factorization.

68340737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020078.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 68340737 is about 8266.8456499441. The cubic root of 68340737 is about 408.8461250857.

The spelling of 68340737 in words is "sixty-eight million, three hundred forty thousand, seven hundred thirty-seven".