645060533 has 8 divisors (see below), whose sum is σ = 695102688. Its totient is φ = 595078704.

The previous prime is 645060499. The next prime is 645060541. The reversal of 645060533 is 335060546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 645060533 - 2²² = 640866229 is a prime.

It is a super-2 number, since 2×645060533² = 832206182468488178, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 645060533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645060593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8510 + ... + 36912.

It is an arithmetic number, because the mean of its divisors is an integer number (86887836).

Almost surely, 2^645060533 is an apocalyptic number.

It is an amenable number.

645060533 is a deficient number, since it is larger than the sum of its proper divisors (50042155).

645060533 is a wasteful number, since it uses less digits than its factorization.

645060533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30163.

The product of its (nonzero) digits is 32400, while the sum is 32.

The square root of 645060533 is about 25398.0419127145. The cubic root of 645060533 is about 864.0392879976.

The spelling of 645060533 in words is "six hundred forty-five million, sixty thousand, five hundred thirty-three".