245549664 has 48 divisors (see below), whose sum is σ = 716189040. Its totient is φ = 81849600.

The previous prime is 245549663. The next prime is 245549693. The reversal of 245549664 is 466945542.

245549664 is a `hidden beast` number, since 2 + 4 + 554 + 96 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245549663) 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, 141237 + ... + 142964.

It is an arithmetic number, because the mean of its divisors is an integer number (14920605).

Almost surely, 2^245549664 is an apocalyptic number.

245549664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

245549664 is an abundant number, since it is smaller than the sum of its proper divisors (470639376).

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

245549664 is a wasteful number, since it uses less digits than its factorization.

245549664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284220 (or 284206 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 45.

The square root of 245549664 is about 15670.0243777730. The cubic root of 245549664 is about 626.2000741869.

The spelling of 245549664 in words is "two hundred forty-five million, five hundred forty-nine thousand, six hundred sixty-four".