245222658 has 18 divisors (see below), whose sum is σ = 531459747. Its totient is φ = 81718740.

The previous prime is 245222651. The next prime is 245222669. The reversal of 245222658 is 856222542.

245222658 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 122611329 + 122611329 = 11073^2 + 11073^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=11073.

It is not an unprimeable number, because it can be changed into a prime (245222651) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 64593 + ... + 68283.

Almost surely, 2^245222658 is an apocalyptic number.

245222658 is an abundant number, since it is smaller than the sum of its proper divisors (286237089).

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

245222658 is an frugal number, since it uses more digits than its factorization.

245222658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7390 (or 3696 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

The square root of 245222658 is about 15659.5867761573. The cubic root of 245222658 is about 625.9219740999.

The spelling of 245222658 in words is "two hundred forty-five million, two hundred twenty-two thousand, six hundred fifty-eight".