660970946 has 8 divisors (see below), whose sum is σ = 1006254480. Its totient is φ = 325552788.

The previous prime is 660970939. The next prime is 660970957. The reversal of 660970946 is 649079066.

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

It is a super-2 number, since 2×660970946² = 873765182912269832, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 660970946.

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, 2466176 + ... + 2466443.

It is an arithmetic number, because the mean of its divisors is an integer number (125781810).

Almost surely, 2^660970946 is an apocalyptic number.

660970946 is a deficient number, since it is larger than the sum of its proper divisors (345283534).

660970946 is a wasteful number, since it uses less digits than its factorization.

660970946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4932688.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 660970946 is about 25709.3552233423. The cubic root of 660970946 is about 871.0855107545.

The spelling of 660970946 in words is "six hundred sixty million, nine hundred seventy thousand, nine hundred forty-six".