645088611 has 8 divisors (see below), whose sum is σ = 860305680. Its totient is φ = 429965312.

The previous prime is 645088607. The next prime is 645088621. The reversal of 645088611 is 116880546.

645088611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 645088611 - 2² = 645088607 is a prime.

It is a super-2 number, since 2×645088611² = 832278632083818642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 645088611.

It is not an unprimeable number, because it can be changed into a prime (645088621) 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, 5406 + ... + 36323.

It is an arithmetic number, because the mean of its divisors is an integer number (107538210).

Almost surely, 2^645088611 is an apocalyptic number.

645088611 is a deficient number, since it is larger than the sum of its proper divisors (215217069).

645088611 is a wasteful number, since it uses less digits than its factorization.

645088611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46885.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 645088611 is about 25398.5946658472. The cubic root of 645088611 is about 864.0518243627.

The spelling of 645088611 in words is "six hundred forty-five million, eighty-eight thousand, six hundred eleven".