73131677 has 2 divisors, whose sum is σ = 73131678. Its totient is φ = 73131676.

The previous prime is 73131631. The next prime is 73131683. The reversal of 73131677 is 77613137.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72914521 + 217156 = 8539^2 + 466^2 .

It is a cyclic number.

It is not a de Polignac number, because 73131677 - 2¹² = 73127581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73131607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36565838 + 36565839.

It is an arithmetic number, because the mean of its divisors is an integer number (36565839).

Almost surely, 2^73131677 is an apocalyptic number.

It is an amenable number.

73131677 is a deficient number, since it is larger than the sum of its proper divisors (1).

73131677 is an equidigital number, since it uses as much as digits as its factorization.

73131677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18522, while the sum is 35.

The square root of 73131677 is about 8551.7060870916. The cubic root of 73131677 is about 418.1850576695.

The spelling of 73131677 in words is "seventy-three million, one hundred thirty-one thousand, six hundred seventy-seven".