73647061 has 2 divisors, whose sum is σ = 73647062. Its totient is φ = 73647060.

The previous prime is 73647047. The next prime is 73647107. The reversal of 73647061 is 16074637.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44422225 + 29224836 = 6665^2 + 5406^2 .

It is an emirp because it is prime and its reverse (16074637) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73647061 - 2¹³ = 73638869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73647001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36823530 + 36823531.

It is an arithmetic number, because the mean of its divisors is an integer number (36823531).

Almost surely, 2^73647061 is an apocalyptic number.

It is an amenable number.

73647061 is a deficient number, since it is larger than the sum of its proper divisors (1).

73647061 is an equidigital number, since it uses as much as digits as its factorization.

73647061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 73647061 is about 8581.7865855543. The cubic root of 73647061 is about 419.1651234660.

The spelling of 73647061 in words is "seventy-three million, six hundred forty-seven thousand, sixty-one".