645411030 has 64 divisors (see below), whose sum is σ = 1718496000. Its totient is φ = 153806720.

The previous prime is 645411029. The next prime is 645411043. The reversal of 645411030 is 30114546.

It is a congruent number.

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, 2896 + ... + 36044.

It is an arithmetic number, because the mean of its divisors is an integer number (26851500).

Almost surely, 2^645411030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 645411030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (859248000).

645411030 is an abundant number, since it is smaller than the sum of its proper divisors (1073084970).

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

645411030 is a wasteful number, since it uses less digits than its factorization.

645411030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33229.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 645411030 is about 25404.9410548421. The cubic root of 645411030 is about 864.1957530779.

Adding to 645411030 its reverse (30114546), we get a palindrome (675525576).

The spelling of 645411030 in words is "six hundred forty-five million, four hundred eleven thousand, thirty".