545069640 has 128 divisors (see below), whose sum is σ = 1806831360. Its totient is φ = 130842624.

The previous prime is 545069639. The next prime is 545069653. The reversal of 545069640 is 46960545.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41112 + ... + 52728.

It is an arithmetic number, because the mean of its divisors is an integer number (14115870).

Almost surely, 2^545069640 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 545069640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (903415680).

545069640 is an abundant number, since it is smaller than the sum of its proper divisors (1261761720).

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

545069640 is a wasteful number, since it uses less digits than its factorization.

545069640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11671 (or 11667 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 545069640 is about 23346.7265371401. The cubic root of 545069640 is about 816.8657070502.

It can be divided in two parts, 54506 and 9640, that added together give a palindrome (64146).

The spelling of 545069640 in words is "five hundred forty-five million, sixty-nine thousand, six hundred forty".