613626464 has 48 divisors (see below), whose sum is σ = 1324947456. Its totient is φ = 277430400.

The previous prime is 613626443. The next prime is 613626473. The reversal of 613626464 is 464626316.

It is a happy number.

It is a super-2 number, since 2×613626464² = 753074874642286592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62669 + ... + 71795.

It is an arithmetic number, because the mean of its divisors is an integer number (27603072).

Almost surely, 2^613626464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 613626464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (662473728).

613626464 is an abundant number, since it is smaller than the sum of its proper divisors (711320992).

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

613626464 is a wasteful number, since it uses less digits than its factorization.

613626464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9339 (or 9331 counting only the distinct ones).

The product of its digits is 124416, while the sum is 38.

The square root of 613626464 is about 24771.4848969536. The cubic root of 613626464 is about 849.7699326589.

The spelling of 613626464 in words is "six hundred thirteen million, six hundred twenty-six thousand, four hundred sixty-four".