172061699 has 2 divisors, whose sum is σ = 172061700. Its totient is φ = 172061698.

The previous prime is 172061693. The next prime is 172061717. The reversal of 172061699 is 996160271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172061699 - 2¹⁶ = 171996163 is a prime.

It is not a weakly prime, because it can be changed into another prime (172061693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86030849 + 86030850.

It is an arithmetic number, because the mean of its divisors is an integer number (86030850).

Almost surely, 2^172061699 is an apocalyptic number.

172061699 is a deficient number, since it is larger than the sum of its proper divisors (1).

172061699 is an equidigital number, since it uses as much as digits as its factorization.

172061699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 172061699 is about 13117.2290900174. The cubic root of 172061699 is about 556.1962660883.

The spelling of 172061699 in words is "one hundred seventy-two million, sixty-one thousand, six hundred ninety-nine".