67136564 has 12 divisors (see below), whose sum is σ = 128169888. Its totient is φ = 30516600.

The previous prime is 67136561. The next prime is 67136579. The reversal of 67136564 is 46563176.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67136561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 762872 + ... + 762959.

It is an arithmetic number, because the mean of its divisors is an integer number (10680824).

Almost surely, 2^67136564 is an apocalyptic number.

It is an amenable number.

67136564 is a deficient number, since it is larger than the sum of its proper divisors (61033324).

67136564 is a wasteful number, since it uses less digits than its factorization.

67136564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525846 (or 1525844 counting only the distinct ones).

The product of its digits is 90720, while the sum is 38.

The square root of 67136564 is about 8193.6904994026. The cubic root of 67136564 is about 406.4305736423.

It can be divided in two parts, 67 and 136564, that added together give a palindrome (136631).

The spelling of 67136564 in words is "sixty-seven million, one hundred thirty-six thousand, five hundred sixty-four".