67568641 has 24 divisors (see below), whose sum is σ = 82180224. Its totient is φ = 54405120.

The previous prime is 67568639. The next prime is 67568671. The reversal of 67568641 is 14686576.

It is a happy number.

It is not a de Polignac number, because 67568641 - 2¹ = 67568639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67568671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 262785 + ... + 263041.

It is an arithmetic number, because the mean of its divisors is an integer number (3424176).

Almost surely, 2^67568641 is an apocalyptic number.

It is an amenable number.

67568641 is a deficient number, since it is larger than the sum of its proper divisors (14611583).

67568641 is a wasteful number, since it uses less digits than its factorization.

67568641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 358 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 67568641 is about 8220.0146593543. The cubic root of 67568641 is about 407.3006107994.

The spelling of 67568641 in words is "sixty-seven million, five hundred sixty-eight thousand, six hundred forty-one".