72294619 has 2 divisors, whose sum is σ = 72294620. Its totient is φ = 72294618.

The previous prime is 72294617. The next prime is 72294631. The reversal of 72294619 is 91649227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72294619 - 2¹ = 72294617 is a prime.

It is a super-2 number, since 2×72294619² = 10453023872710322, which contains 22 as substring.

Together with 72294617, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (72294617) 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 as a sum of consecutive naturals, namely, 36147309 + 36147310.

It is an arithmetic number, because the mean of its divisors is an integer number (36147310).

Almost surely, 2^72294619 is an apocalyptic number.

72294619 is a deficient number, since it is larger than the sum of its proper divisors (1).

72294619 is an equidigital number, since it uses as much as digits as its factorization.

72294619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 40.

The square root of 72294619 is about 8502.6242419620. The cubic root of 72294619 is about 416.5834296307.

The spelling of 72294619 in words is "seventy-two million, two hundred ninety-four thousand, six hundred nineteen".