613011890 has 8 divisors (see below), whose sum is σ = 1103421420. Its totient is φ = 245204752.

The previous prime is 613011859. The next prime is 613011899. The reversal of 613011890 is 98110316.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 554932249 + 58079641 = 23557^2 + 7621^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (613011899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30650585 + ... + 30650604.

Almost surely, 2^613011890 is an apocalyptic number.

613011890 is a deficient number, since it is larger than the sum of its proper divisors (490409530).

613011890 is a wasteful number, since it uses less digits than its factorization.

613011890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61301196.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 613011890 is about 24759.0769214040. The cubic root of 613011890 is about 849.4861438583.

The spelling of 613011890 in words is "six hundred thirteen million, eleven thousand, eight hundred ninety".