67515061 has 2 divisors, whose sum is σ = 67515062. Its totient is φ = 67515060.

The previous prime is 67515023. The next prime is 67515073. The reversal of 67515061 is 16051576.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65512836 + 2002225 = 8094^2 + 1415^2 .

It is a cyclic number.

It is not a de Polignac number, because 67515061 - 2⁷ = 67514933 is a prime.

It is equal to p_3980416 and since 67515061 and 3980416 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67515001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33757530 + 33757531.

It is an arithmetic number, because the mean of its divisors is an integer number (33757531).

Almost surely, 2^67515061 is an apocalyptic number.

It is an amenable number.

67515061 is a deficient number, since it is larger than the sum of its proper divisors (1).

67515061 is an equidigital number, since it uses as much as digits as its factorization.

67515061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 67515061 is about 8216.7548947258. The cubic root of 67515061 is about 407.1929230844.

The spelling of 67515061 in words is "sixty-seven million, five hundred fifteen thousand, sixty-one".