605445764 has 90 divisors (see below), whose sum is σ = 1361235582. Its totient is φ = 235435200.

The previous prime is 605445761. The next prime is 605445791. The reversal of 605445764 is 467544506.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 464833600 + 140612164 = 21560^2 + 11858^2 .

It is not an unprimeable number, because it can be changed into a prime (605445761) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1161824 + ... + 1162344.

Almost surely, 2^605445764 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 605445764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (680617791).

605445764 is an abundant number, since it is smaller than the sum of its proper divisors (755789818).

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

605445764 is a wasteful number, since it uses less digits than its factorization.

605445764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 41.

The square root of 605445764 is about 24605.8075258667. The cubic root of 605445764 is about 845.9767256962.

The spelling of 605445764 in words is "six hundred five million, four hundred forty-five thousand, seven hundred sixty-four".