626313545 has 24 divisors (see below), whose sum is σ = 889671048. Its totient is φ = 420456960.

The previous prime is 626313517. The next prime is 626313547. The reversal of 626313545 is 545313626.

It can be written as a sum of positive squares in 4 ways, for example, as 1713481 + 624600064 = 1309^2 + 24992^2 .

It is not a de Polignac number, because 626313545 - 2¹² = 626309449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (626313547) 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 23 ways as a sum of consecutive naturals, for example, 31952 + ... + 47681.

It is an arithmetic number, because the mean of its divisors is an integer number (37069627).

Almost surely, 2^626313545 is an apocalyptic number.

626313545 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

626313545 is a deficient number, since it is larger than the sum of its proper divisors (263357503).

626313545 is a wasteful number, since it uses less digits than its factorization.

626313545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79673 (or 79662 counting only the distinct ones).

The product of its digits is 64800, while the sum is 35.

The square root of 626313545 is about 25026.2571112821. The cubic root of 626313545 is about 855.5865223107.

The spelling of 626313545 in words is "six hundred twenty-six million, three hundred thirteen thousand, five hundred forty-five".