545342640 has 160 divisors (see below), whose sum is σ = 1747763136. Its totient is φ = 140574720.

The previous prime is 545342591. The next prime is 545342647. The reversal of 545342640 is 46243545.

It is not an unprimeable number, because it can be changed into a prime (545342647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1544704 + ... + 1545056.

Almost surely, 2^545342640 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 545342640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (873881568).

545342640 is an abundant number, since it is smaller than the sum of its proper divisors (1202420496).

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

545342640 is a wasteful number, since it uses less digits than its factorization.

545342640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567 (or 561 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 33.

The square root of 545342640 is about 23352.5724493042. The cubic root of 545342640 is about 817.0020609526.

The spelling of 545342640 in words is "five hundred forty-five million, three hundred forty-two thousand, six hundred forty".