67646061 has 48 divisors (see below), whose sum is σ = 121405440. Its totient is φ = 35419680.

The previous prime is 67646039. The next prime is 67646071. The reversal of 67646061 is 16064676.

67646061 is a `hidden beast` number, since 6 + 7 + 646 + 0 + 6 + 1 = 666.

It is not a de Polignac number, because 67646061 - 2⁶ = 67645997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67646071) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36196 + ... + 38018.

It is an arithmetic number, because the mean of its divisors is an integer number (2529280).

Almost surely, 2^67646061 is an apocalyptic number.

It is an amenable number.

67646061 is a deficient number, since it is larger than the sum of its proper divisors (53759379).

67646061 is a wasteful number, since it uses less digits than its factorization.

67646061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886 (or 1883 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 67646061 is about 8224.7225485119. The cubic root of 67646061 is about 407.4561128040.

The spelling of 67646061 in words is "sixty-seven million, six hundred forty-six thousand, sixty-one".