645088337 has 8 divisors (see below), whose sum is σ = 674217600. Its totient is φ = 616049280.

The previous prime is 645088289. The next prime is 645088349. The reversal of 645088337 is 733880546.

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 645088337 - 2¹⁶ = 645022801 is a prime.

It is a super-2 number, since 2×645088337² = 832277925066851138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (645088357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7712 + ... + 36737.

It is an arithmetic number, because the mean of its divisors is an integer number (84277200).

Almost surely, 2^645088337 is an apocalyptic number.

It is an amenable number.

645088337 is a deficient number, since it is larger than the sum of its proper divisors (29129263).

645088337 is a wasteful number, since it uses less digits than its factorization.

645088337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45103.

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 645088337 is about 25398.5892718474. The cubic root of 645088337 is about 864.0517020280.

The spelling of 645088337 in words is "six hundred forty-five million, eighty-eight thousand, three hundred thirty-seven".