67302005 has 4 divisors (see below), whose sum is σ = 80762412. Its totient is φ = 53841600.

The previous prime is 67301989. The next prime is 67302007. The reversal of 67302005 is 50020376.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15792676 + 51509329 = 3974^2 + 7177^2 .

It is not a de Polignac number, because 67302005 - 2⁴ = 67301989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67302007) 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, 6730196 + ... + 6730205.

It is an arithmetic number, because the mean of its divisors is an integer number (20190603).

Almost surely, 2^67302005 is an apocalyptic number.

It is an amenable number.

67302005 is a deficient number, since it is larger than the sum of its proper divisors (13460407).

67302005 is a wasteful number, since it uses less digits than its factorization.

67302005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13460406.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 67302005 is about 8203.7799214752. The cubic root of 67302005 is about 406.7641480754.

The spelling of 67302005 in words is "sixty-seven million, three hundred two thousand, five".