68373649 has 4 divisors (see below), whose sum is σ = 68615536. Its totient is φ = 68131764.

The previous prime is 68373611. The next prime is 68373653. The reversal of 68373649 is 94637386.

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 68373649 - 2¹³ = 68365457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68373599 and 68373608.

It is not an unprimeable number, because it can be changed into a prime (68373659) 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, 120519 + ... + 121084.

It is an arithmetic number, because the mean of its divisors is an integer number (17153884).

Almost surely, 2^68373649 is an apocalyptic number.

It is an amenable number.

68373649 is a deficient number, since it is larger than the sum of its proper divisors (241887).

68373649 is a wasteful number, since it uses less digits than its factorization.

68373649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241886.

The product of its digits is 653184, while the sum is 46.

The square root of 68373649 is about 8268.8360124022. The cubic root of 68373649 is about 408.9117461914.

The spelling of 68373649 in words is "sixty-eight million, three hundred seventy-three thousand, six hundred forty-nine".