851354065 has 8 divisors (see below), whose sum is σ = 1025424360. Its totient is φ = 678550272.

The previous prime is 851354057. The next prime is 851354069. The reversal of 851354065 is 560453158.

It can be written as a sum of positive squares in 4 ways, for example, as 31047184 + 820306881 = 5572^2 + 28641^2 .

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 851354065 - 2³ = 851354057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (851354069) 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, 315144 + ... + 317833.

It is an arithmetic number, because the mean of its divisors is an integer number (128178045).

Almost surely, 2^851354065 is an apocalyptic number.

It is an amenable number.

851354065 is a deficient number, since it is larger than the sum of its proper divisors (174070295).

851354065 is a wasteful number, since it uses less digits than its factorization.

851354065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633251.

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 851354065 is about 29177.9722564814. The cubic root of 851354065 is about 947.7709753295.

The spelling of 851354065 in words is "eight hundred fifty-one million, three hundred fifty-four thousand, sixty-five".