67672513 has 2 divisors, whose sum is σ = 67672514. Its totient is φ = 67672512.

The previous prime is 67672511. The next prime is 67672523. The reversal of 67672513 is 31527676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60093504 + 7579009 = 7752^2 + 2753^2 .

It is a cyclic number.

It is not a de Polignac number, because 67672513 - 2¹ = 67672511 is a prime.

Together with 67672511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (67672511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33836256 + 33836257.

It is an arithmetic number, because the mean of its divisors is an integer number (33836257).

Almost surely, 2^67672513 is an apocalyptic number.

It is an amenable number.

67672513 is a deficient number, since it is larger than the sum of its proper divisors (1).

67672513 is an equidigital number, since it uses as much as digits as its factorization.

67672513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 37.

The square root of 67672513 is about 8226.3304698997. The cubic root of 67672513 is about 407.5092157952.

The spelling of 67672513 in words is "sixty-seven million, six hundred seventy-two thousand, five hundred thirteen".