73427657 has 2 divisors, whose sum is σ = 73427658. Its totient is φ = 73427656.

The previous prime is 73427603. The next prime is 73427663. The reversal of 73427657 is 75672437.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71842576 + 1585081 = 8476^2 + 1259^2 .

It is a cyclic number.

It is not a de Polignac number, because 73427657 - 2⁸ = 73427401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73427687) 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 as a sum of consecutive naturals, namely, 36713828 + 36713829.

It is an arithmetic number, because the mean of its divisors is an integer number (36713829).

Almost surely, 2^73427657 is an apocalyptic number.

It is an amenable number.

73427657 is a deficient number, since it is larger than the sum of its proper divisors (1).

73427657 is an equidigital number, since it uses as much as digits as its factorization.

73427657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 246960, while the sum is 41.

The square root of 73427657 is about 8568.9939316118. The cubic root of 73427657 is about 418.7484606166.

The spelling of 73427657 in words is "seventy-three million, four hundred twenty-seven thousand, six hundred fifty-seven".