661245302 has 8 divisors (see below), whose sum is σ = 991996200. Its totient is φ = 330579904.

The previous prime is 661245301. The next prime is 661245317. The reversal of 661245302 is 203542166.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (661245301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3974 + ... + 36582.

It is an arithmetic number, because the mean of its divisors is an integer number (123999525).

Almost surely, 2^661245302 is an apocalyptic number.

661245302 is a deficient number, since it is larger than the sum of its proper divisors (330750898).

661245302 is a wasteful number, since it uses less digits than its factorization.

661245302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42750.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 661245302 is about 25714.6903928474. The cubic root of 661245302 is about 871.2060175529.

Adding to 661245302 its reverse (203542166), we get a palindrome (864787468).

The spelling of 661245302 in words is "six hundred sixty-one million, two hundred forty-five thousand, three hundred two".