66698337 has 8 divisors (see below), whose sum is σ = 88991136. Its totient is φ = 44435552.

The previous prime is 66698273. The next prime is 66698351. The reversal of 66698337 is 73389666.

It is a happy number.

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

It is not a de Polignac number, because 66698337 - 2⁶ = 66698273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66691337) 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, 1668 + ... + 11669.

It is an arithmetic number, because the mean of its divisors is an integer number (11123892).

Almost surely, 2^66698337 is an apocalyptic number.

It is an amenable number.

66698337 is a deficient number, since it is larger than the sum of its proper divisors (22292799).

66698337 is a wasteful number, since it uses less digits than its factorization.

66698337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15007.

The product of its digits is 979776, while the sum is 48.

The square root of 66698337 is about 8166.9049829173. The cubic root of 66698337 is about 405.5443313283.

The spelling of 66698337 in words is "sixty-six million, six hundred ninety-eight thousand, three hundred thirty-seven".