245489664 has 112 divisors (see below), whose sum is σ = 748637568. Its totient is φ = 70090752.

The previous prime is 245489663. The next prime is 245489687. The reversal of 245489664 is 466984542.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245489663) 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, 171319 + ... + 172745.

It is an arithmetic number, because the mean of its divisors is an integer number (6684264).

Almost surely, 2^245489664 is an apocalyptic number.

245489664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245489664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (374318784).

245489664 is an abundant number, since it is smaller than the sum of its proper divisors (503147904).

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

245489664 is an equidigital number, since it uses as much as digits as its factorization.

245489664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463 (or 1439 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 48.

The square root of 245489664 is about 15668.1097775067. The cubic root of 245489664 is about 626.1490660874.

The spelling of 245489664 in words is "two hundred forty-five million, four hundred eighty-nine thousand, six hundred sixty-four".