66673397 has 8 divisors (see below), whose sum is σ = 76248000. Its totient is φ = 57111264.

The previous prime is 66673361. The next prime is 66673403. The reversal of 66673397 is 79337666.

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

It is not a de Polignac number, because 66673397 - 2⁸ = 66673141 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 (66673097) 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, 17129 + ... + 20657.

It is an arithmetic number, because the mean of its divisors is an integer number (9531000).

Almost surely, 2^66673397 is an apocalyptic number.

It is an amenable number.

66673397 is a deficient number, since it is larger than the sum of its proper divisors (9574603).

66673397 is a wasteful number, since it uses less digits than its factorization.

66673397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6235.

The product of its digits is 857304, while the sum is 47.

The square root of 66673397 is about 8165.3779459373. The cubic root of 66673397 is about 405.4937776613.

The spelling of 66673397 in words is "sixty-six million, six hundred seventy-three thousand, three hundred ninety-seven".