66573702 has 48 divisors (see below), whose sum is σ = 156029328. Its totient is φ = 20393280.

The previous prime is 66573673. The next prime is 66573733. The reversal of 66573702 is 20737566.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68077 + ... + 69047.

It is an arithmetic number, because the mean of its divisors is an integer number (3250611).

Almost surely, 2^66573702 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66573702, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78014664).

66573702 is an abundant number, since it is smaller than the sum of its proper divisors (89455626).

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

66573702 is a wasteful number, since it uses less digits than its factorization.

66573702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285 (or 1282 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 36.

The square root of 66573702 is about 8159.2709233117. The cubic root of 66573702 is about 405.2915687349.

The spelling of 66573702 in words is "sixty-six million, five hundred seventy-three thousand, seven hundred two".