172076617 has 2 divisors, whose sum is σ = 172076618. Its totient is φ = 172076616.

The previous prime is 172076587. The next prime is 172076623. The reversal of 172076617 is 716670271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115691536 + 56385081 = 10756^2 + 7509^2 .

It is a cyclic number.

It is not a de Polignac number, because 172076617 - 2¹⁵ = 172043849 is a prime.

It is a super-2 number, since 2×172076617² = 59220724236329378, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (172076647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86038308 + 86038309.

It is an arithmetic number, because the mean of its divisors is an integer number (86038309).

Almost surely, 2^172076617 is an apocalyptic number.

It is an amenable number.

172076617 is a deficient number, since it is larger than the sum of its proper divisors (1).

172076617 is an equidigital number, since it uses as much as digits as its factorization.

172076617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24696, while the sum is 37.

The square root of 172076617 is about 13117.7977191295. The cubic root of 172076617 is about 556.2123399660.

The spelling of 172076617 in words is "one hundred seventy-two million, seventy-six thousand, six hundred seventeen".