245723616 has 144 divisors (see below), whose sum is σ = 723891168. Its totient is φ = 79027200.

The previous prime is 245723591. The next prime is 245723617. The reversal of 245723616 is 616327542.

245723616 is a `hidden beast` number, since 24 + 572 + 3 + 61 + 6 = 666.

245723616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245723617) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1247230 + ... + 1247426.

It is an arithmetic number, because the mean of its divisors is an integer number (5027022).

Almost surely, 2^245723616 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 245723616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361945584).

245723616 is an abundant number, since it is smaller than the sum of its proper divisors (478167552).

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

245723616 is a wasteful number, since it uses less digits than its factorization.

245723616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345 (or 334 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 245723616 is about 15675.5738650934. The cubic root of 245723616 is about 626.3479099190.

The spelling of 245723616 in words is "two hundred forty-five million, seven hundred twenty-three thousand, six hundred sixteen".