661702002 has 32 divisors (see below), whose sum is σ = 1455535872. Its totient is φ = 199267584.

The previous prime is 661701977. The next prime is 661702009. The reversal of 661702002 is 200207166.

It is a happy number.

661702002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (661702009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86583 + ... + 93914.

It is an arithmetic number, because the mean of its divisors is an integer number (45485496).

Almost surely, 2^661702002 is an apocalyptic number.

661702002 is an abundant number, since it is smaller than the sum of its proper divisors (793833870).

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

661702002 is a wasteful number, since it uses less digits than its factorization.

661702002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180562.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 661702002 is about 25723.5689980998. The cubic root of 661702002 is about 871.4065423412.

Adding to 661702002 its reverse (200207166), we get a palindrome (861909168).

The spelling of 661702002 in words is "six hundred sixty-one million, seven hundred two thousand, two".