245721060 has 384 divisors, whose sum is σ = 914457600. Its totient is φ = 54190080.

The previous prime is 245721037. The next prime is 245721061. The reversal of 245721060 is 60127542.

245721060 is a `hidden beast` number, since 24 + 572 + 10 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245721061) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3460825 + ... + 3460895.

It is an arithmetic number, because the mean of its divisors is an integer number (2381400).

Almost surely, 2^245721060 is an apocalyptic number.

245721060 is a gapful number since it is divisible by the number (20) 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 245721060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (457228800).

245721060 is an abundant number, since it is smaller than the sum of its proper divisors (668736540).

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

245721060 is a wasteful number, since it uses less digits than its factorization.

245721060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 245721060 is about 15675.4923367657. The cubic root of 245721060 is about 626.3457381690.

The spelling of 245721060 in words is "two hundred forty-five million, seven hundred twenty-one thousand, sixty".