626240045 has 8 divisors (see below), whose sum is σ = 759932280. Its totient is φ = 495362560.

The previous prime is 626240009. The next prime is 626240047. The reversal of 626240045 is 540042626.

626240045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 27899524 + 598340521 = 5282^2 + 24461^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-626240045 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (626240047) 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, 703196 + ... + 704085.

It is an arithmetic number, because the mean of its divisors is an integer number (94991535).

Almost surely, 2^626240045 is an apocalyptic number.

It is an amenable number.

626240045 is a deficient number, since it is larger than the sum of its proper divisors (133692235).

626240045 is a wasteful number, since it uses less digits than its factorization.

626240045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407375.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 626240045 is about 25024.7886104958. The cubic root of 626240045 is about 855.5530523499.

The spelling of 626240045 in words is "six hundred twenty-six million, two hundred forty thousand, forty-five".