660226942 has 4 divisors (see below), whose sum is σ = 990340416. Its totient is φ = 330113470.

The previous prime is 660226939. The next prime is 660226951. The reversal of 660226942 is 249622066.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×660226942² = 871799229885342728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165056734 + ... + 165056737.

It is an arithmetic number, because the mean of its divisors is an integer number (247585104).

Almost surely, 2^660226942 is an apocalyptic number.

660226942 is a deficient number, since it is larger than the sum of its proper divisors (330113474).

660226942 is a wasteful number, since it uses less digits than its factorization.

660226942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330113473.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 660226942 is about 25694.8816303948. The cubic root of 660226942 is about 870.7585501273.

The spelling of 660226942 in words is "six hundred sixty million, two hundred twenty-six thousand, nine hundred forty-two".