66700337 has 4 divisors (see below), whose sum is σ = 72764016. Its totient is φ = 60636660.

The previous prime is 66700327. The next prime is 66700339. The reversal of 66700337 is 73300766.

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 66700337 - 2⁴ = 66700321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66700339) 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, 3031823 + ... + 3031844.

It is an arithmetic number, because the mean of its divisors is an integer number (18191004).

Almost surely, 2^66700337 is an apocalyptic number.

It is an amenable number.

66700337 is a deficient number, since it is larger than the sum of its proper divisors (6063679).

66700337 is a wasteful number, since it uses less digits than its factorization.

66700337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6063678.

The product of its (nonzero) digits is 15876, while the sum is 32.

The square root of 66700337 is about 8167.0274274059. The cubic root of 66700337 is about 405.5483848054.

The spelling of 66700337 in words is "sixty-six million, seven hundred thousand, three hundred thirty-seven".