645054355 has 32 divisors (see below), whose sum is σ = 882892800. Its totient is φ = 448156800.

The previous prime is 645054331. The next prime is 645054391. The reversal of 645054355 is 553450546.

It is not a de Polignac number, because 645054355 - 2²⁹ = 108183443 is a prime.

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, 132301 + ... + 137089.

It is an arithmetic number, because the mean of its divisors is an integer number (27590400).

Almost surely, 2^645054355 is an apocalyptic number.

645054355 is a deficient number, since it is larger than the sum of its proper divisors (237838445).

645054355 is a wasteful number, since it uses less digits than its factorization.

645054355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4915.

The product of its (nonzero) digits is 180000, while the sum is 37.

The square root of 645054355 is about 25397.9202888740. The cubic root of 645054355 is about 864.0365295733.

The spelling of 645054355 in words is "six hundred forty-five million, fifty-four thousand, three hundred fifty-five".