66700371 has 4 divisors (see below), whose sum is σ = 88933832. Its totient is φ = 44466912.

The previous prime is 66700369. The next prime is 66700373. The reversal of 66700371 is 17300766.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (66700369) and next prime (66700373).

It is not a de Polignac number, because 66700371 - 2¹ = 66700369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66700373) 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, 11116726 + ... + 11116731.

It is an arithmetic number, because the mean of its divisors is an integer number (22233458).

Almost surely, 2^66700371 is an apocalyptic number.

66700371 is a deficient number, since it is larger than the sum of its proper divisors (22233461).

66700371 is a wasteful number, since it uses less digits than its factorization.

66700371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22233460.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 66700371 is about 8167.0295089463. The cubic root of 66700371 is about 405.5484537138.

The spelling of 66700371 in words is "sixty-six million, seven hundred thousand, three hundred seventy-one".