634242545 has 8 divisors (see below), whose sum is σ = 805861224. Its totient is φ = 477547264.

The previous prime is 634242527. The next prime is 634242563. The reversal of 634242545 is 545242436.

It is an interprime number because it is at equal distance from previous prime (634242527) and next prime (634242563).

It can be written as a sum of positive squares in 4 ways, for example, as 30459361 + 603783184 = 5519^2 + 24572^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 634242545 - 2¹⁰ = 634241521 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3730754 + ... + 3730923.

It is an arithmetic number, because the mean of its divisors is an integer number (100732653).

Almost surely, 2^634242545 is an apocalyptic number.

It is an amenable number.

634242545 is a deficient number, since it is larger than the sum of its proper divisors (171618679).

634242545 is a wasteful number, since it uses less digits than its factorization.

634242545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7461699.

The product of its digits is 115200, while the sum is 35.

The square root of 634242545 is about 25184.1725097332. The cubic root of 634242545 is about 859.1819086091.

The spelling of 634242545 in words is "six hundred thirty-four million, two hundred forty-two thousand, five hundred forty-five".