72057619 has 4 divisors (see below), whose sum is σ = 72076144. Its totient is φ = 72039096.

The previous prime is 72057617. The next prime is 72057631. The reversal of 72057619 is 91675027.

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

It is a cyclic number.

It is not a de Polignac number, because 72057619 - 2¹ = 72057617 is a prime.

It is a super-2 number, since 2×72057619² = 10384600911898322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72057613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 927 + ... + 12040.

It is an arithmetic number, because the mean of its divisors is an integer number (18019036).

Almost surely, 2^72057619 is an apocalyptic number.

72057619 is a deficient number, since it is larger than the sum of its proper divisors (18525).

72057619 is a wasteful number, since it uses less digits than its factorization.

72057619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18524.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 72057619 is about 8488.6759273752. The cubic root of 72057619 is about 416.1277094186.

The spelling of 72057619 in words is "seventy-two million, fifty-seven thousand, six hundred nineteen".