661227074 has 16 divisors (see below), whose sum is σ = 1024358400. Its totient is φ = 319874544.

The previous prime is 661227041. The next prime is 661227079. The reversal of 661227074 is 470722166.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (661227079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11714 + ... + 38205.

It is an arithmetic number, because the mean of its divisors is an integer number (64022400).

Almost surely, 2^661227074 is an apocalyptic number.

661227074 is a deficient number, since it is larger than the sum of its proper divisors (363131326).

661227074 is a wasteful number, since it uses less digits than its factorization.

661227074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50137.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 661227074 is about 25714.3359626493. The cubic root of 661227074 is about 871.1980122085.

The spelling of 661227074 in words is "six hundred sixty-one million, two hundred twenty-seven thousand, seventy-four".