245205634 has 4 divisors (see below), whose sum is σ = 367808454. Its totient is φ = 122602816.

The previous prime is 245205619. The next prime is 245205673. The reversal of 245205634 is 436502542.

245205634 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 245016409 + 189225 = 15653^2 + 435^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 245205596 and 245205605.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 61301407 + ... + 61301410.

Almost surely, 2^245205634 is an apocalyptic number.

245205634 is a deficient number, since it is larger than the sum of its proper divisors (122602820).

245205634 is a wasteful number, since it uses less digits than its factorization.

245205634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122602819.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 245205634 is about 15659.0432019329. The cubic root of 245205634 is about 625.9074893831.

The spelling of 245205634 in words is "two hundred forty-five million, two hundred five thousand, six hundred thirty-four".