66364031 has 4 divisors (see below), whose sum is σ = 66394200. Its totient is φ = 66333864.

The previous prime is 66364027. The next prime is 66364043. The reversal of 66364031 is 13046366.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13046366 = 2 ⋅6523183.

It is a cyclic number.

It is not a de Polignac number, because 66364031 - 2² = 66364027 is a prime.

It is a super-2 number, since 2×66364031² = 8808369221137922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66363985 and 66364003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66364091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11501 + ... + 16278.

It is an arithmetic number, because the mean of its divisors is an integer number (16598550).

Almost surely, 2^66364031 is an apocalyptic number.

66364031 is a deficient number, since it is larger than the sum of its proper divisors (30169).

66364031 is a wasteful number, since it uses less digits than its factorization.

66364031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30168.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 66364031 is about 8146.4121550533. The cubic root of 66364031 is about 404.8656385064.

The spelling of 66364031 in words is "sixty-six million, three hundred sixty-four thousand, thirty-one".