645200003633 has 8 divisors (see below), whose sum is σ = 694969990656. Its totient is φ = 597239834400.

The previous prime is 645200003593. The next prime is 645200003671. The reversal of 645200003633 is 336300002546.

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 645200003633 - 2³⁴ = 628020134449 is a prime.

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 645200003633.

It is not an unprimeable number, because it can be changed into a prime (645200000633) 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, 452453708 + ... + 452455133.

It is an arithmetic number, because the mean of its divisors is an integer number (86871248832).

Almost surely, 2^645200003633 is an apocalyptic number.

It is an amenable number.

645200003633 is a deficient number, since it is larger than the sum of its proper divisors (49769987023).

645200003633 is a wasteful number, since it uses less digits than its factorization.

645200003633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904908895.

The product of its (nonzero) digits is 38880, while the sum is 32.

The spelling of 645200003633 in words is "six hundred forty-five billion, two hundred million, three thousand, six hundred thirty-three".