245634405 has 32 divisors (see below), whose sum is σ = 401224320. Its totient is φ = 128286720.

The previous prime is 245634371. The next prime is 245634407. The reversal of 245634405 is 504436542.

It is not a de Polignac number, because 245634405 - 2⁶ = 245634341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245634407) 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 31 ways as a sum of consecutive naturals, for example, 382885 + ... + 383525.

It is an arithmetic number, because the mean of its divisors is an integer number (12538260).

Almost surely, 2^245634405 is an apocalyptic number.

It is an amenable number.

245634405 is a deficient number, since it is larger than the sum of its proper divisors (155589915).

245634405 is a wasteful number, since it uses less digits than its factorization.

245634405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141.

The product of its (nonzero) digits is 57600, while the sum is 33.

The square root of 245634405 is about 15672.7280650179. The cubic root of 245634405 is about 626.2721013232.

The spelling of 245634405 in words is "two hundred forty-five million, six hundred thirty-four thousand, four hundred five".