613506448 has 20 divisors (see below), whose sum is σ = 1190858800. Its totient is φ = 306188064.

The previous prime is 613506437. The next prime is 613506449. The reversal of 613506448 is 844605316.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (613506449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26298 + ... + 43801.

It is an arithmetic number, because the mean of its divisors is an integer number (59542940).

Almost surely, 2^613506448 is an apocalyptic number.

It is an amenable number.

613506448 is a deficient number, since it is larger than the sum of its proper divisors (577352352).

613506448 is a wasteful number, since it uses less digits than its factorization.

613506448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70654 (or 70648 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 613506448 is about 24769.0623157196. The cubic root of 613506448 is about 849.7145283568.

The spelling of 613506448 in words is "six hundred thirteen million, five hundred six thousand, four hundred forty-eight".