851577064 has 32 divisors (see below), whose sum is σ = 1722105000. Its totient is φ = 392447232.

The previous prime is 851577061. The next prime is 851577109. The reversal of 851577064 is 460775158.

It can be written as a sum of positive squares in 4 ways, for example, as 659976100 + 191600964 = 25690^2 + 13842^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 851577064.

It is not an unprimeable number, because it can be changed into a prime (851577061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67962 + ... + 79510.

Almost surely, 2^851577064 is an apocalyptic number.

It is an amenable number.

851577064 is an abundant number, since it is smaller than the sum of its proper divisors (870527936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

851577064 is a wasteful number, since it uses less digits than its factorization.

851577064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12277 (or 12273 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 43.

The square root of 851577064 is about 29181.7933650418. The cubic root of 851577064 is about 947.8537194105.

The spelling of 851577064 in words is "eight hundred fifty-one million, five hundred seventy-seven thousand, sixty-four".