1020246661 has 8 divisors (see below), whose sum is σ = 1187996544. Its totient is φ = 857996880.

The previous prime is 1020246607. The next prime is 1020246671. The reversal of 1020246661 is 1666420201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020246661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020246671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1374625 + ... + 1375366.

It is an arithmetic number, because the mean of its divisors is an integer number (148499568).

Almost surely, 2^1020246661 is an apocalyptic number.

It is an amenable number.

1020246661 is a deficient number, since it is larger than the sum of its proper divisors (167749883).

1020246661 is an equidigital number, since it uses as much as digits as its factorization.

1020246661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2750051.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1020246661 is about 31941.3002396584. The cubic root of 1020246661 is about 1006.7038450347.

Adding to 1020246661 its reverse (1666420201), we get a palindrome (2686666862).

The spelling of 1020246661 in words is "one billion, twenty million, two hundred forty-six thousand, six hundred sixty-one".