645096269 has 8 divisors (see below), whose sum is σ = 656734848. Its totient is φ = 633559680.

The previous prime is 645096247. The next prime is 645096281. The reversal of 645096269 is 962690546.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-645096269 is a prime.

It is a super-2 number, since 2×645096269² = 832298392555440722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645096209) 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, 12677 + ... + 38090.

It is an arithmetic number, because the mean of its divisors is an integer number (82091856).

Almost surely, 2^645096269 is an apocalyptic number.

It is an amenable number.

645096269 is a deficient number, since it is larger than the sum of its proper divisors (11638579).

645096269 is a wasteful number, since it uses less digits than its factorization.

645096269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50995.

The product of its (nonzero) digits is 699840, while the sum is 47.

The square root of 645096269 is about 25398.7454217723. The cubic root of 645096269 is about 864.0552434706.

The spelling of 645096269 in words is "six hundred forty-five million, ninety-six thousand, two hundred sixty-nine".