73661701 has 2 divisors, whose sum is σ = 73661702. Its totient is φ = 73661700.

The previous prime is 73661699. The next prime is 73661713. The reversal of 73661701 is 10716637.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73513476 + 148225 = 8574^2 + 385^2 .

It is an emirp because it is prime and its reverse (10716637) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73661701 - 2¹ = 73661699 is a prime.

Together with 73661699, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73661771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36830850 + 36830851.

It is an arithmetic number, because the mean of its divisors is an integer number (36830851).

Almost surely, 2^73661701 is an apocalyptic number.

It is an amenable number.

73661701 is a deficient number, since it is larger than the sum of its proper divisors (1).

73661701 is an equidigital number, since it uses as much as digits as its factorization.

73661701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 73661701 is about 8582.6395124111. The cubic root of 73661701 is about 419.1928963363.

The spelling of 73661701 in words is "seventy-three million, six hundred sixty-one thousand, seven hundred one".