73715661 has 12 divisors (see below), whose sum is σ = 106559388. Its totient is φ = 49106304.

The previous prime is 73715659. The next prime is 73715671. The reversal of 73715661 is 16651737.

It can be written as a sum of positive squares in 2 ways, for example, as 17690436 + 56025225 = 4206^2 + 7485^2 .

It is not a de Polignac number, because 73715661 - 2¹ = 73715659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73715671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14671 + ... + 19043.

It is an arithmetic number, because the mean of its divisors is an integer number (8879949).

Almost surely, 2^73715661 is an apocalyptic number.

It is an amenable number.

73715661 is a deficient number, since it is larger than the sum of its proper divisors (32843727).

73715661 is a wasteful number, since it uses less digits than its factorization.

73715661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6252 (or 6249 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 73715661 is about 8585.7824920039. The cubic root of 73715661 is about 419.2952296039.

The spelling of 73715661 in words is "seventy-three million, seven hundred fifteen thousand, six hundred sixty-one".