245608653 has 4 divisors (see below), whose sum is σ = 327478208. Its totient is φ = 163739100.

The previous prime is 245608609. The next prime is 245608679. The reversal of 245608653 is 356806542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 245608653 - 2⁸ = 245608397 is a prime.

It is a super-2 number, since 2×245608653² = 120647220856948818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245628653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40934773 + ... + 40934778.

It is an arithmetic number, because the mean of its divisors is an integer number (81869552).

Almost surely, 2^245608653 is an apocalyptic number.

It is an amenable number.

245608653 is a deficient number, since it is larger than the sum of its proper divisors (81869555).

245608653 is an equidigital number, since it uses as much as digits as its factorization.

245608653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81869554.

The product of its (nonzero) digits is 172800, while the sum is 39.

The square root of 245608653 is about 15671.9064890013. The cubic root of 245608653 is about 626.2502147003.

The spelling of 245608653 in words is "two hundred forty-five million, six hundred eight thousand, six hundred fifty-three".