850743664 has 80 divisors (see below), whose sum is σ = 1764775936. Its totient is φ = 396576000.

The previous prime is 850743643. The next prime is 850743671. The reversal of 850743664 is 466347058.

It is a super-2 number, since 2×850743664² = 1447529563672289792, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 850743664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2770999 + ... + 2771305.

Almost surely, 2^850743664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 850743664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (882387968).

850743664 is an abundant number, since it is smaller than the sum of its proper divisors (914032272).

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

850743664 is a wasteful number, since it uses less digits than its factorization.

850743664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534 (or 528 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 43.

The square root of 850743664 is about 29167.5104182719. The cubic root of 850743664 is about 947.5444112822.

The spelling of 850743664 in words is "eight hundred fifty million, seven hundred forty-three thousand, six hundred sixty-four".