66531002 has 8 divisors (see below), whose sum is σ = 99832500. Its totient is φ = 33253504.

The previous prime is 66530999. The next prime is 66531011. The reversal of 66531002 is 20013566.

It can be written as a sum of positive squares in 2 ways, for example, as 45010681 + 21520321 = 6709^2 + 4639^2 .

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

It is a super-3 number, since 3×66531002³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4874 + ... + 12522.

Almost surely, 2^66531002 is an apocalyptic number.

66531002 is a deficient number, since it is larger than the sum of its proper divisors (33301498).

66531002 is a wasteful number, since it uses less digits than its factorization.

66531002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12000.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 66531002 is about 8156.6538482395. The cubic root of 66531002 is about 405.2048996210.

Adding to 66531002 its reverse (20013566), we get a palindrome (86544568).

The spelling of 66531002 in words is "sixty-six million, five hundred thirty-one thousand, two".