67662061 has 4 divisors (see below), whose sum is σ = 67681152. Its totient is φ = 67642972.

The previous prime is 67662041. The next prime is 67662073. The reversal of 67662061 is 16026676.

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 not a de Polignac number, because 67662061 - 2¹³ = 67653869 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 (67662031) 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 in 3 ways as a sum of consecutive naturals, for example, 2491 + ... + 11896.

It is an arithmetic number, because the mean of its divisors is an integer number (16920288).

Almost surely, 2^67662061 is an apocalyptic number.

It is an amenable number.

67662061 is a deficient number, since it is larger than the sum of its proper divisors (19091).

67662061 is a wasteful number, since it uses less digits than its factorization.

67662061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19090.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 67662061 is about 8225.6951681910. The cubic root of 67662061 is about 407.4882348216.

The spelling of 67662061 in words is "sixty-seven million, six hundred sixty-two thousand, sixty-one".