613363081 has 4 divisors (see below), whose sum is σ = 613418112. Its totient is φ = 613308052.

The previous prime is 613363033. The next prime is 613363087. The reversal of 613363081 is 180363316.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 613363081 - 2⁹ = 613362569 is a prime.

It is a super-2 number, since 2×613363081² = 752428538267625122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613363087) 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, 4225 + ... + 35278.

It is an arithmetic number, because the mean of its divisors is an integer number (153354528).

Almost surely, 2^613363081 is an apocalyptic number.

613363081 is the 15664-th centered pentagonal number.

It is an amenable number.

613363081 is a deficient number, since it is larger than the sum of its proper divisors (55031).

613363081 is a wasteful number, since it uses less digits than its factorization.

613363081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55030.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 613363081 is about 24766.1680725945. The cubic root of 613363081 is about 849.6483348046.

The spelling of 613363081 in words is "six hundred thirteen million, three hundred sixty-three thousand, eighty-one".