645535083 has 8 divisors (see below), whose sum is σ = 879026688. Its totient is φ = 421200104.

The previous prime is 645535081. The next prime is 645535087. The reversal of 645535083 is 380535546.

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 645535083 - 2¹ = 645535081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (645535081) 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, 2288991 + ... + 2289272.

It is an arithmetic number, because the mean of its divisors is an integer number (109878336).

Almost surely, 2^645535083 is an apocalyptic number.

645535083 is a deficient number, since it is larger than the sum of its proper divisors (233491605).

645535083 is a wasteful number, since it uses less digits than its factorization.

645535083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4578313.

The product of its (nonzero) digits is 216000, while the sum is 39.

The square root of 645535083 is about 25407.3824507760. The cubic root of 645535083 is about 864.2511179038.

The spelling of 645535083 in words is "six hundred forty-five million, five hundred thirty-five thousand, eighty-three".