613138464 has 48 divisors (see below), whose sum is σ = 1788323040. Its totient is φ = 204379200.

The previous prime is 613138457. The next prime is 613138489. The reversal of 613138464 is 464831316.

It is a happy number.

613138464 is a `hidden beast` number, since 61 + 3 + 138 + 464 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

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, 353962 + ... + 355689.

It is an arithmetic number, because the mean of its divisors is an integer number (37256730).

Almost surely, 2^613138464 is an apocalyptic number.

It is an amenable number.

613138464 is an abundant number, since it is smaller than the sum of its proper divisors (1175184576).

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

613138464 is a wasteful number, since it uses less digits than its factorization.

613138464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709670 (or 709656 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 613138464 is about 24761.6329025369. The cubic root of 613138464 is about 849.5446068133.

The spelling of 613138464 in words is "six hundred thirteen million, one hundred thirty-eight thousand, four hundred sixty-four".