610643113 has 4 divisors (see below), whose sum is σ = 615100500. Its totient is φ = 606185728.

The previous prime is 610643107. The next prime is 610643119. The reversal of 610643113 is 311346016.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (610643107) and next prime (610643119).

It can be written as a sum of positive squares in 2 ways, for example, as 443018304 + 167624809 = 21048^2 + 12947^2 .

It is a cyclic number.

It is not a de Polignac number, because 610643113 - 2²¹ = 608545961 is a prime.

It is a super-2 number, since 2×610643113² = 745770022908661538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (610643119) 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, 2228488 + ... + 2228761.

It is an arithmetic number, because the mean of its divisors is an integer number (153775125).

Almost surely, 2^610643113 is an apocalyptic number.

It is an amenable number.

610643113 is a deficient number, since it is larger than the sum of its proper divisors (4457387).

610643113 is a wasteful number, since it uses less digits than its factorization.

610643113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4457386.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 610643113 is about 24711.1940828443. The cubic root of 610643113 is about 848.3905475475.

Adding to 610643113 its reverse (311346016), we get a palindrome (921989129).

The spelling of 610643113 in words is "six hundred ten million, six hundred forty-three thousand, one hundred thirteen".