642010613 has 8 divisors (see below), whose sum is σ = 673505280. Its totient is φ = 611139760.

The previous prime is 642010583. The next prime is 642010619. The reversal of 642010613 is 316010246.

It is a happy number.

642010613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 642010613 - 2⁸ = 642010357 is a prime.

It is a super-3 number, since 3×642010613³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642010619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153845 + ... + 157962.

It is an arithmetic number, because the mean of its divisors is an integer number (84188160).

Almost surely, 2^642010613 is an apocalyptic number.

It is an amenable number.

642010613 is a deficient number, since it is larger than the sum of its proper divisors (31494667).

642010613 is a wasteful number, since it uses less digits than its factorization.

642010613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311907.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 642010613 is about 25337.9283486239. The cubic root of 642010613 is about 862.6753772895.

Adding to 642010613 its reverse (316010246), we get a palindrome (958020859).

The spelling of 642010613 in words is "six hundred forty-two million, ten thousand, six hundred thirteen".