645360126 has 8 divisors (see below), whose sum is σ = 1290720264. Its totient is φ = 215120040.

The previous prime is 645360101. The next prime is 645360167. The reversal of 645360126 is 621063546.

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

645360126 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53780005 + ... + 53780016.

It is an arithmetic number, because the mean of its divisors is an integer number (161340033).

Almost surely, 2^645360126 is an apocalyptic number.

645360126 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

645360126 is a wasteful number, since it uses less digits than its factorization.

645360126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107560026.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 645360126 is about 25403.9391827331. The cubic root of 645360126 is about 864.1730325814.

The spelling of 645360126 in words is "six hundred forty-five million, three hundred sixty thousand, one hundred twenty-six".