68546513 has 4 divisors (see below), whose sum is σ = 78338880. Its totient is φ = 58754148.

The previous prime is 68546507. The next prime is 68546537. The reversal of 68546513 is 31564586.

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 68546513 - 2⁴ = 68546497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68546573) 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, 4896173 + ... + 4896186.

It is an arithmetic number, because the mean of its divisors is an integer number (19584720).

Almost surely, 2^68546513 is an apocalyptic number.

It is an amenable number.

68546513 is a deficient number, since it is larger than the sum of its proper divisors (9792367).

68546513 is an equidigital number, since it uses as much as digits as its factorization.

68546513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9792366.

The product of its digits is 86400, while the sum is 38.

The square root of 68546513 is about 8279.2821548731. The cubic root of 68546513 is about 409.2560632126.

The spelling of 68546513 in words is "sixty-eight million, five hundred forty-six thousand, five hundred thirteen".