67405061 has 8 divisors (see below), whose sum is σ = 69453144. Its totient is φ = 65387520.

The previous prime is 67405043. The next prime is 67405087. The reversal of 67405061 is 16050476.

It can be written as a sum of positive squares in 4 ways, for example, as 2102500 + 65302561 = 1450^2 + 8081^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67405061 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 (67405031) 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 7 ways as a sum of consecutive naturals, for example, 3116 + ... + 12021.

It is an arithmetic number, because the mean of its divisors is an integer number (8681643).

Almost surely, 2^67405061 is an apocalyptic number.

67405061 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

67405061 is a deficient number, since it is larger than the sum of its proper divisors (2048083).

67405061 is a wasteful number, since it uses less digits than its factorization.

67405061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15271.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 67405061 is about 8210.0585259790. The cubic root of 67405061 is about 406.9716610009.

The spelling of 67405061 in words is "sixty-seven million, four hundred five thousand, sixty-one".