920798643 has 8 divisors (see below), whose sum is σ = 1228109008. Its totient is φ = 613677024.

The previous prime is 920798609. The next prime is 920798647. The reversal of 920798643 is 346897029.

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

It is not a de Polignac number, because 920798643 - 2⁶ = 920798579 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 920798592 and 920798601.

It is not an unprimeable number, because it can be changed into a prime (920798647) 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, 35380 + ... + 55617.

It is an arithmetic number, because the mean of its divisors is an integer number (153513626).

Almost surely, 2^920798643 is an apocalyptic number.

920798643 is a deficient number, since it is larger than the sum of its proper divisors (307310365).

920798643 is a wasteful number, since it uses less digits than its factorization.

920798643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94373.

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 920798643 is about 30344.6641602770. The cubic root of 920798643 is about 972.8701764373.

It can be divided in two parts, 9207986 and 43, that added together give a palindrome (9208029).

The spelling of 920798643 in words is "nine hundred twenty million, seven hundred ninety-eight thousand, six hundred forty-three".