66963373 has 8 divisors (see below), whose sum is σ = 71580096. Its totient is φ = 62488800.

The previous prime is 66963361. The next prime is 66963383. The reversal of 66963373 is 37336966.

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

It is a cyclic number.

It is not a de Polignac number, because 66963373 - 2¹⁷ = 66832301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66963313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34563 + ... + 36448.

It is an arithmetic number, because the mean of its divisors is an integer number (8947512).

Almost surely, 2^66963373 is an apocalyptic number.

It is an amenable number.

66963373 is a deficient number, since it is larger than the sum of its proper divisors (4616723).

66963373 is a wasteful number, since it uses less digits than its factorization.

66963373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71075.

The product of its digits is 367416, while the sum is 43.

The square root of 66963373 is about 8183.1151158957. The cubic root of 66963373 is about 406.0807854483.

The spelling of 66963373 in words is "sixty-six million, nine hundred sixty-three thousand, three hundred seventy-three".