73677997 has 4 divisors (see below), whose sum is σ = 73839676. Its totient is φ = 73516320.

The previous prime is 73677971. The next prime is 73678001. The reversal of 73677997 is 79977637.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58201641 + 15476356 = 7629^2 + 3934^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73677997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73617997) 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 in 3 ways as a sum of consecutive naturals, for example, 80154 + ... + 81067.

It is an arithmetic number, because the mean of its divisors is an integer number (18459919).

Almost surely, 2^73677997 is an apocalyptic number.

It is an amenable number.

73677997 is a deficient number, since it is larger than the sum of its proper divisors (161679).

73677997 is a wasteful number, since it uses less digits than its factorization.

73677997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161678.

The product of its digits is 3500658, while the sum is 55.

The square root of 73677997 is about 8583.5888182042. The cubic root of 73677997 is about 419.2238064007.

The spelling of 73677997 in words is "seventy-three million, six hundred seventy-seven thousand, nine hundred ninety-seven".