820606597243 has 8 divisors (see below), whose sum is σ = 824909868720. Its totient is φ = 816311532000.

The previous prime is 820606597231. The next prime is 820606597247. The reversal of 820606597243 is 342795606028.

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

It is a cyclic number.

It is not a de Polignac number, because 820606597243 - 2⁵ = 820606597211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (820606597247) 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, 1850988 + ... + 2251081.

It is an arithmetic number, because the mean of its divisors is an integer number (103113733590).

Almost surely, 2^820606597243 is an apocalyptic number.

820606597243 is a deficient number, since it is larger than the sum of its proper divisors (4303271477).

820606597243 is a wasteful number, since it uses less digits than its factorization.

820606597243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4103117.

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 820606597243 in words is "eight hundred twenty billion, six hundred six million, five hundred ninety-seven thousand, two hundred forty-three".