66124001 has 4 divisors (see below), whose sum is σ = 66151104. Its totient is φ = 66096900.

The previous prime is 66123997. The next prime is 66124007. The reversal of 66124001 is 10042166.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66124001 - 2² = 66123997 is a prime.

It is a deceptive number, since it divides R_66124000.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66124007) 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, 9485 + ... + 14906.

It is an arithmetic number, because the mean of its divisors is an integer number (16537776).

Almost surely, 2^66124001 is an apocalyptic number.

It is an amenable number.

66124001 is a deficient number, since it is larger than the sum of its proper divisors (27103).

66124001 is a wasteful number, since it uses less digits than its factorization.

66124001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27102.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 66124001 is about 8131.6665573546. Note that the first 3 decimals coincide. The cubic root of 66124001 is about 404.3769335254.

Adding to 66124001 its reverse (10042166), we get a palindrome (76166167).

The spelling of 66124001 in words is "sixty-six million, one hundred twenty-four thousand, one".