73647461 has 2 divisors, whose sum is σ = 73647462. Its totient is φ = 73647460.

The previous prime is 73647419. The next prime is 73647487. The reversal of 73647461 is 16474637.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73017025 + 630436 = 8545^2 + 794^2 .

It is an emirp because it is prime and its reverse (16474637) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73647461 - 2⁶ = 73647397 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73647491) 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, 36823730 + 36823731.

It is an arithmetic number, because the mean of its divisors is an integer number (36823731).

Almost surely, 2^73647461 is an apocalyptic number.

It is an amenable number.

73647461 is a deficient number, since it is larger than the sum of its proper divisors (1).

73647461 is an equidigital number, since it uses as much as digits as its factorization.

73647461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 38.

The square root of 73647461 is about 8581.8098906932. The cubic root of 73647461 is about 419.1658823365.

The spelling of 73647461 in words is "seventy-three million, six hundred forty-seven thousand, four hundred sixty-one".