245208649 has 8 divisors (see below), whose sum is σ = 282255680. Its totient is φ = 208665936.

The previous prime is 245208647. The next prime is 245208671. The reversal of 245208649 is 946802542.

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 245208649 - 2¹ = 245208647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245208641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125034 + ... + 126979.

It is an arithmetic number, because the mean of its divisors is an integer number (35281960).

Almost surely, 2^245208649 is an apocalyptic number.

It is an amenable number.

245208649 is a deficient number, since it is larger than the sum of its proper divisors (37047031).

245208649 is a wasteful number, since it uses less digits than its factorization.

245208649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252159.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 245208649 is about 15659.1394718867. The cubic root of 245208649 is about 625.9100547175.

The spelling of 245208649 in words is "two hundred forty-five million, two hundred eight thousand, six hundred forty-nine".