66698274 has 16 divisors (see below), whose sum is σ = 135914112. Its totient is φ = 21813168.

The previous prime is 66698273. The next prime is 66698351. The reversal of 66698274 is 47289666.

It is not an unprimeable number, because it can be changed into a prime (66698273) 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, 104554 + ... + 105189.

It is an arithmetic number, because the mean of its divisors is an integer number (8494632).

Almost surely, 2^66698274 is an apocalyptic number.

66698274 is an abundant number, since it is smaller than the sum of its proper divisors (69215838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66698274 is a wasteful number, since it uses less digits than its factorization.

66698274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209801.

The product of its digits is 870912, while the sum is 48.

The square root of 66698274 is about 8166.9011258861. The cubic root of 66698274 is about 405.5442036424.

The spelling of 66698274 in words is "sixty-six million, six hundred ninety-eight thousand, two hundred seventy-four".