67564401 has 8 divisors (see below), whose sum is σ = 90928224. Its totient is φ = 44621760.

The previous prime is 67564397. The next prime is 67564411. The reversal of 67564401 is 10446576.

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

It is not a de Polignac number, because 67564401 - 2² = 67564397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67564411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104920 + ... + 105561.

It is an arithmetic number, because the mean of its divisors is an integer number (11366028).

Almost surely, 2^67564401 is an apocalyptic number.

It is an amenable number.

67564401 is a deficient number, since it is larger than the sum of its proper divisors (23363823).

67564401 is a wasteful number, since it uses less digits than its factorization.

67564401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210591.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 67564401 is about 8219.7567482256. The cubic root of 67564401 is about 407.2920911139.

The spelling of 67564401 in words is "sixty-seven million, five hundred sixty-four thousand, four hundred one".