164630245 has 16 divisors (see below), whose sum is σ = 220091760. Its totient is φ = 117379584.

The previous prime is 164630239. The next prime is 164630267. The reversal of 164630245 is 542036461.

It can be written as a sum of positive squares in 8 ways, for example, as 27060804 + 137569441 = 5202^2 + 11729^2 .

It is a cyclic number.

It is not a de Polignac number, because 164630245 - 2⁹ = 164629733 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41784 + ... + 45553.

It is an arithmetic number, because the mean of its divisors is an integer number (13755735).

Almost surely, 2^164630245 is an apocalyptic number.

It is an amenable number.

164630245 is a deficient number, since it is larger than the sum of its proper divisors (55461515).

164630245 is a wasteful number, since it uses less digits than its factorization.

164630245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87384.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 164630245 is about 12830.8318124742. The cubic root of 164630245 is about 548.0706448520.

The spelling of 164630245 in words is "one hundred sixty-four million, six hundred thirty thousand, two hundred forty-five".