208420671 has 32 divisors (see below), whose sum is σ = 302964480. Its totient is φ = 127008000.

The previous prime is 208420669. The next prime is 208420673. The reversal of 208420671 is 176024802.

It is an interprime number because it is at equal distance from previous prime (208420669) and next prime (208420673).

It is not a de Polignac number, because 208420671 - 2¹ = 208420669 is a prime.

It is a super-2 number, since 2×208420671² = 86878352200180482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208420673) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235596 + ... + 236478.

It is an arithmetic number, because the mean of its divisors is an integer number (9467640).

Almost surely, 2^208420671 is an apocalyptic number.

208420671 is a deficient number, since it is larger than the sum of its proper divisors (94543809).

208420671 is a wasteful number, since it uses less digits than its factorization.

208420671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 208420671 is about 14436.7818782442. The cubic root of 208420671 is about 592.8983793781.

The spelling of 208420671 in words is "two hundred eight million, four hundred twenty thousand, six hundred seventy-one".