72954613 has 2 divisors, whose sum is σ = 72954614. Its totient is φ = 72954612.

The previous prime is 72954589. The next prime is 72954631. The reversal of 72954613 is 31645927.

Together with next prime (72954631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72029169 + 925444 = 8487^2 + 962^2 .

It is an emirp because it is prime and its reverse (31645927) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72954613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72954313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36477306 + 36477307.

It is an arithmetic number, because the mean of its divisors is an integer number (36477307).

Almost surely, 2^72954613 is an apocalyptic number.

It is an amenable number.

72954613 is a deficient number, since it is larger than the sum of its proper divisors (1).

72954613 is an equidigital number, since it uses as much as digits as its factorization.

72954613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The square root of 72954613 is about 8541.3472590687. The cubic root of 72954613 is about 417.8472863076.

The spelling of 72954613 in words is "seventy-two million, nine hundred fifty-four thousand, six hundred thirteen".