613434440 has 32 divisors (see below), whose sum is σ = 1382375160. Its totient is φ = 244992000.

The previous prime is 613434427. The next prime is 613434461. The reversal of 613434440 is 44434316.

It can be written as a sum of positive squares in 4 ways, for example, as 612166564 + 1267876 = 24742^2 + 1126^2 .

It is a super-2 number, since 2×613434440² = 752603624356227200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14840 + ... + 38040.

Almost surely, 2^613434440 is an apocalyptic number.

It is an amenable number.

613434440 is an abundant number, since it is smaller than the sum of its proper divisors (768940720).

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

613434440 is a wasteful number, since it uses less digits than its factorization.

613434440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23873 (or 23869 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 613434440 is about 24767.6086855393. The cubic root of 613434440 is about 849.6812830460.

Adding to 613434440 its reverse (44434316), we get a palindrome (657868756).

The spelling of 613434440 in words is "six hundred thirteen million, four hundred thirty-four thousand, four hundred forty".