645063117 has 8 divisors (see below), whose sum is σ = 860227200. Its totient is φ = 429970560.

The previous prime is 645063103. The next prime is 645063119. The reversal of 645063117 is 711360546.

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

It is not a de Polignac number, because 645063117 - 2⁴ = 645063101 is a prime.

It is a super-2 number, since 2×645063117² = 832212849827511378, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645063119) 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, 8892 + ... + 37002.

It is an arithmetic number, because the mean of its divisors is an integer number (107528400).

Almost surely, 2^645063117 is an apocalyptic number.

It is an amenable number.

645063117 is a deficient number, since it is larger than the sum of its proper divisors (215164083).

645063117 is a wasteful number, since it uses less digits than its factorization.

645063117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35763.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 645063117 is about 25398.0927827268. The cubic root of 645063117 is about 864.0404417262.

The spelling of 645063117 in words is "six hundred forty-five million, sixty-three thousand, one hundred seventeen".