66112401 has 8 divisors (see below), whose sum is σ = 88288704. Its totient is φ = 44005520.

The previous prime is 66112379. The next prime is 66112433. The reversal of 66112401 is 10421166.

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

It is a cyclic number.

It is not a de Polignac number, because 66112401 - 2¹⁵ = 66079633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66112441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15090 + ... + 18971.

It is an arithmetic number, because the mean of its divisors is an integer number (11036088).

Almost surely, 2^66112401 is an apocalyptic number.

It is an amenable number.

66112401 is a deficient number, since it is larger than the sum of its proper divisors (22176303).

66112401 is a wasteful number, since it uses less digits than its factorization.

66112401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34711.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 66112401 is about 8130.9532651467. The cubic root of 66112401 is about 404.3532857995.

Adding to 66112401 its reverse (10421166), we get a palindrome (76533567).

The spelling of 66112401 in words is "sixty-six million, one hundred twelve thousand, four hundred one".