67006715 has 4 divisors (see below), whose sum is σ = 80408064. Its totient is φ = 53605368.

The previous prime is 67006697. The next prime is 67006729. The reversal of 67006715 is 51760076.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 67006715 - 2¹² = 67002619 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6700667 + ... + 6700676.

It is an arithmetic number, because the mean of its divisors is an integer number (20102016).

Almost surely, 2^67006715 is an apocalyptic number.

67006715 is a deficient number, since it is larger than the sum of its proper divisors (13401349).

67006715 is a wasteful number, since it uses less digits than its factorization.

67006715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13401348.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 67006715 is about 8185.7629455048. The cubic root of 67006715 is about 406.1683783950.

The spelling of 67006715 in words is "sixty-seven million, six thousand, seven hundred fifteen".