245621716 has 12 divisors (see below), whose sum is σ = 437948532. Its totient is φ = 120493568.

The previous prime is 245621707. The next prime is 245621737. The reversal of 245621716 is 617126542.

It can be written as a sum of positive squares in 2 ways, for example, as 213744400 + 31877316 = 14620^2 + 5646^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 579085 + ... + 579508.

It is an arithmetic number, because the mean of its divisors is an integer number (36495711).

Almost surely, 2^245621716 is an apocalyptic number.

It is an amenable number.

245621716 is a deficient number, since it is larger than the sum of its proper divisors (192326816).

245621716 is a wasteful number, since it uses less digits than its factorization.

245621716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158650 (or 1158648 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 245621716 is about 15672.3232483254. The cubic root of 245621716 is about 626.2613171342.

The spelling of 245621716 in words is "two hundred forty-five million, six hundred twenty-one thousand, seven hundred sixteen".