850920061 has 8 divisors (see below), whose sum is σ = 859712760. Its totient is φ = 842170368.

The previous prime is 850919933. The next prime is 850920071. The reversal of 850920061 is 160029058.

It can be written as a sum of positive squares in 4 ways, for example, as 566154436 + 284765625 = 23794^2 + 16875^2 .

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 850920061 - 2⁷ = 850919933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850920071) 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, 29805 + ... + 50893.

It is an arithmetic number, because the mean of its divisors is an integer number (107464095).

Almost surely, 2^850920061 is an apocalyptic number.

It is an amenable number.

850920061 is a deficient number, since it is larger than the sum of its proper divisors (8792699).

850920061 is a wasteful number, since it uses less digits than its factorization.

850920061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21503.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 850920061 is about 29170.5341226382. The cubic root of 850920061 is about 947.6098961232.

The spelling of 850920061 in words is "eight hundred fifty million, nine hundred twenty thousand, sixty-one".