76749173 has 2 divisors, whose sum is σ = 76749174. Its totient is φ = 76749172.

The previous prime is 76749143. The next prime is 76749199. The reversal of 76749173 is 37194767.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39025009 + 37724164 = 6247^2 + 6142^2 .

It is a cyclic number.

It is not a de Polignac number, because 76749173 - 2¹² = 76745077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76749143) 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 as a sum of consecutive naturals, namely, 38374586 + 38374587.

It is an arithmetic number, because the mean of its divisors is an integer number (38374587).

Almost surely, 2^76749173 is an apocalyptic number.

It is an amenable number.

76749173 is a deficient number, since it is larger than the sum of its proper divisors (1).

76749173 is an equidigital number, since it uses as much as digits as its factorization.

76749173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 222264, while the sum is 44.

The square root of 76749173 is about 8760.6605344574. The cubic root of 76749173 is about 424.9696365851.

The spelling of 76749173 in words is "seventy-six million, seven hundred forty-nine thousand, one hundred seventy-three".