72842613 has 4 divisors (see below), whose sum is σ = 97123488. Its totient is φ = 48561740.

The previous prime is 72842611. The next prime is 72842641. The reversal of 72842613 is 31624827.

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.

It is a cyclic number.

It is not a de Polignac number, because 72842613 - 2¹ = 72842611 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72842611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12140433 + ... + 12140438.

It is an arithmetic number, because the mean of its divisors is an integer number (24280872).

Almost surely, 2^72842613 is an apocalyptic number.

It is an amenable number.

72842613 is a deficient number, since it is larger than the sum of its proper divisors (24280875).

72842613 is a wasteful number, since it uses less digits than its factorization.

72842613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24280874.

The product of its digits is 16128, while the sum is 33.

The square root of 72842613 is about 8534.7883980799. The cubic root of 72842613 is about 417.6333502582.

The spelling of 72842613 in words is "seventy-two million, eight hundred forty-two thousand, six hundred thirteen".