90372673 has 2 divisors, whose sum is σ = 90372674. Its totient is φ = 90372672.

The previous prime is 90372661. The next prime is 90372677. The reversal of 90372673 is 37627309.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84953089 + 5419584 = 9217^2 + 2328^2 .

It is a cyclic number.

It is not a de Polignac number, because 90372673 - 2¹³ = 90364481 is a prime.

It is not a weakly prime, because it can be changed into another prime (90372677) 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, 45186336 + 45186337.

It is an arithmetic number, because the mean of its divisors is an integer number (45186337).

Almost surely, 2^90372673 is an apocalyptic number.

It is an amenable number.

90372673 is a deficient number, since it is larger than the sum of its proper divisors (1).

90372673 is an equidigital number, since it uses as much as digits as its factorization.

90372673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47628, while the sum is 37.

The square root of 90372673 is about 9506.4542811713. The cubic root of 90372673 is about 448.7581778601.

The spelling of 90372673 in words is "ninety million, three hundred seventy-two thousand, six hundred seventy-three".