73906549 has 2 divisors, whose sum is σ = 73906550. Its totient is φ = 73906548.

The previous prime is 73906543. The next prime is 73906571. The reversal of 73906549 is 94560937.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37822500 + 36084049 = 6150^2 + 6007^2 .

It is a cyclic number.

It is not a de Polignac number, because 73906549 - 2⁷ = 73906421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73906543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36953274 + 36953275.

It is an arithmetic number, because the mean of its divisors is an integer number (36953275).

Almost surely, 2^73906549 is an apocalyptic number.

It is an amenable number.

73906549 is a deficient number, since it is larger than the sum of its proper divisors (1).

73906549 is an equidigital number, since it uses as much as digits as its factorization.

73906549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 73906549 is about 8596.8918220482. The cubic root of 73906549 is about 419.6568417722.

The spelling of 73906549 in words is "seventy-three million, nine hundred six thousand, five hundred forty-nine".