1021960066 has 24 divisors (see below), whose sum is σ = 1631496240. Its totient is φ = 480013632.

The previous prime is 1021960061. The next prime is 1021960067. The reversal of 1021960066 is 6600691201.

It is not an unprimeable number, because it can be changed into a prime (1021960061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 379561 + ... + 382243.

It is an arithmetic number, because the mean of its divisors is an integer number (67979010).

Almost surely, 2^1021960066 is an apocalyptic number.

1021960066 is a deficient number, since it is larger than the sum of its proper divisors (609536174).

1021960066 is a wasteful number, since it uses less digits than its factorization.

1021960066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3378 (or 3361 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 1021960066 is about 31968.1101412017. The cubic root of 1021960066 is about 1007.2670835703.

The spelling of 1021960066 in words is "one billion, twenty-one million, nine hundred sixty thousand, sixty-six".