645096 has 16 divisors (see below), whose sum is σ = 1612800. Its totient is φ = 215024.

The previous prime is 645091. The next prime is 645097. The reversal of 645096 is 690546.

It is a super-2 number, since 2×645096² = 832297698432, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 645096.

It is not an unprimeable number, because it can be changed into a prime (645091) by changing a digit.

645096 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13416 + ... + 13463.

It is an arithmetic number, because the mean of its divisors is an integer number (100800).

2⁶⁴⁵⁰⁹⁶ is an apocalyptic number.

It is an amenable number.

645096 is an abundant number, since it is smaller than the sum of its proper divisors (967704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

645096 is a wasteful number, since it uses less digits than its factorization.

645096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26888 (or 26884 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 645096 is about 803.1786849761. The cubic root of 645096 is about 86.4055123369.

The spelling of 645096 in words is "six hundred forty-five thousand, ninety-six".