171420670 has 16 divisors (see below), whose sum is σ = 310159440. Its totient is φ = 68212224.

The previous prime is 171420659. The next prime is 171420721. The reversal of 171420670 is 76024171.

It is a super-2 number, since 2×171420670² = 58770092206497800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42480 + ... + 46339.

It is an arithmetic number, because the mean of its divisors is an integer number (19384965).

Almost surely, 2^171420670 is an apocalyptic number.

171420670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

171420670 is a deficient number, since it is larger than the sum of its proper divisors (138738770).

171420670 is a wasteful number, since it uses less digits than its factorization.

171420670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89019.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 171420670 is about 13092.7716698948. The cubic root of 171420670 is about 555.5046893132.

The spelling of 171420670 in words is "one hundred seventy-one million, four hundred twenty thousand, six hundred seventy".