66213007 has 8 divisors (see below), whose sum is σ = 75831296. Its totient is φ = 56634552.

The previous prime is 66212957. The next prime is 66213029. The reversal of 66213007 is 70031266.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66213007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66213097) 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, 6303 + ... + 13120.

It is an arithmetic number, because the mean of its divisors is an integer number (9478912).

Almost surely, 2^66213007 is an apocalyptic number.

66213007 is a deficient number, since it is larger than the sum of its proper divisors (9618289).

66213007 is a wasteful number, since it uses less digits than its factorization.

66213007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19917.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 66213007 is about 8137.1375188084. The cubic root of 66213007 is about 404.5582889380.

The spelling of 66213007 in words is "sixty-six million, two hundred thirteen thousand, seven".