661273162 has 8 divisors (see below), whose sum is σ = 1082083392. Its totient is φ = 300578700.

The previous prime is 661273147. The next prime is 661273177. The reversal of 661273162 is 261372166.

It is a happy number.

661273162 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (661273147) and next prime (661273177).

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

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, 15028914 + ... + 15028957.

It is an arithmetic number, because the mean of its divisors is an integer number (135260424).

Almost surely, 2^661273162 is an apocalyptic number.

661273162 is a deficient number, since it is larger than the sum of its proper divisors (420810230).

661273162 is a wasteful number, since it uses less digits than its factorization.

661273162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30057884.

The product of its digits is 18144, while the sum is 34.

The square root of 661273162 is about 25715.2321008386. The cubic root of 661273162 is about 871.2182527797.

The spelling of 661273162 in words is "six hundred sixty-one million, two hundred seventy-three thousand, one hundred sixty-two".