68970913 has 4 divisors (see below), whose sum is σ = 75241008. Its totient is φ = 62700820.

The previous prime is 68970883. The next prime is 68970917. The reversal of 68970913 is 31907986.

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 a de Polignac number, because none of the positive numbers 2^k-68970913 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 68970913.

It is not an unprimeable number, because it can be changed into a prime (68970917) 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, 3135031 + ... + 3135052.

It is an arithmetic number, because the mean of its divisors is an integer number (18810252).

Almost surely, 2^68970913 is an apocalyptic number.

It is an amenable number.

68970913 is a deficient number, since it is larger than the sum of its proper divisors (6270095).

68970913 is a wasteful number, since it uses less digits than its factorization.

68970913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6270094.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 68970913 is about 8304.8728467087. The cubic root of 68970913 is about 410.0989509335.

The spelling of 68970913 in words is "sixty-eight million, nine hundred seventy thousand, nine hundred thirteen".