172670087 has 2 divisors, whose sum is σ = 172670088. Its totient is φ = 172670086.

The previous prime is 172670059. The next prime is 172670101. The reversal of 172670087 is 780076271.

172670087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172670087 - 2¹⁸ = 172407943 is a prime.

It is equal to p_9644069 and since 172670087 and 9644069 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172670087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172670027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86335043 + 86335044.

It is an arithmetic number, because the mean of its divisors is an integer number (86335044).

Almost surely, 2^172670087 is an apocalyptic number.

172670087 is a deficient number, since it is larger than the sum of its proper divisors (1).

172670087 is an equidigital number, since it uses as much as digits as its factorization.

172670087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32928, while the sum is 38.

The square root of 172670087 is about 13140.3990426471. The cubic root of 172670087 is about 556.8510410733.

The spelling of 172670087 in words is "one hundred seventy-two million, six hundred seventy thousand, eighty-seven".