66590102 has 4 divisors (see below), whose sum is σ = 99885156. Its totient is φ = 33295050.

The previous prime is 66590087. The next prime is 66590107. The reversal of 66590102 is 20109566.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66590107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16647524 + ... + 16647527.

It is an arithmetic number, because the mean of its divisors is an integer number (24971289).

Almost surely, 2^66590102 is an apocalyptic number.

66590102 is a deficient number, since it is larger than the sum of its proper divisors (33295054).

66590102 is a wasteful number, since it uses less digits than its factorization.

66590102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33295053.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 66590102 is about 8160.2758531805. The cubic root of 66590102 is about 405.3248463195.

Adding to 66590102 its reverse (20109566), we get a palindrome (86699668).

The spelling of 66590102 in words is "sixty-six million, five hundred ninety thousand, one hundred two".