245665164 has 48 divisors (see below), whose sum is σ = 612366048. Its totient is φ = 76382208.

The previous prime is 245665159. The next prime is 245665169. The reversal of 245665164 is 461566542.

It is an interprime number because it is at equal distance from previous prime (245665159) and next prime (245665169).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (245665169) 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 15 ways as a sum of consecutive naturals, for example, 17724 + ... + 28380.

It is an arithmetic number, because the mean of its divisors is an integer number (12757626).

Almost surely, 2^245665164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245665164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306183024).

245665164 is an abundant number, since it is smaller than the sum of its proper divisors (366700884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245665164 is a wasteful number, since it uses less digits than its factorization.

245665164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10794 (or 10792 counting only the distinct ones).

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

The square root of 245665164 is about 15673.7093248535. The cubic root of 245665164 is about 626.2982413904.

The spelling of 245665164 in words is "two hundred forty-five million, six hundred sixty-five thousand, one hundred sixty-four".