245397965 has 8 divisors (see below), whose sum is σ = 295214328. Its totient is φ = 195827200.

The previous prime is 245397959. The next prime is 245397989. The reversal of 245397965 is 569793542.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 82937449 + 162460516 = 9107^2 + 12746^2 .

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

It is not a de Polignac number, because 245397965 - 2⁸ = 245397709 is a prime.

It is a super-3 number, since 3×245397965³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59192 + ... + 63201.

It is an arithmetic number, because the mean of its divisors is an integer number (36901791).

Almost surely, 2^245397965 is an apocalyptic number.

It is an amenable number.

245397965 is a deficient number, since it is larger than the sum of its proper divisors (49816363).

245397965 is a wasteful number, since it uses less digits than its factorization.

245397965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122799.

The product of its digits is 2041200, while the sum is 50.

The square root of 245397965 is about 15665.1832099085. The cubic root of 245397965 is about 626.0710934987.

The spelling of 245397965 in words is "two hundred forty-five million, three hundred ninety-seven thousand, nine hundred sixty-five".