67405073 has 4 divisors (see below), whose sum is σ = 67434048. Its totient is φ = 67376100.

The previous prime is 67405043. The next prime is 67405087. The reversal of 67405073 is 37050476.

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-67405073 is a prime.

It is a super-2 number, since 2×67405073² = 9086887732270658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67405033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10661 + ... + 15762.

It is an arithmetic number, because the mean of its divisors is an integer number (16858512).

Almost surely, 2^67405073 is an apocalyptic number.

It is an amenable number.

67405073 is a deficient number, since it is larger than the sum of its proper divisors (28975).

67405073 is a wasteful number, since it uses less digits than its factorization.

67405073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28974.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 67405073 is about 8210.0592567898. The cubic root of 67405073 is about 406.9716851518.

The spelling of 67405073 in words is "sixty-seven million, four hundred five thousand, seventy-three".