212685671 has 8 divisors (see below), whose sum is σ = 235484544. Its totient is φ = 190464120.

The previous prime is 212685667. The next prime is 212685673. The reversal of 212685671 is 176586212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212685671 - 2² = 212685667 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212685673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143555 + ... + 145028.

It is an arithmetic number, because the mean of its divisors is an integer number (29435568).

Almost surely, 2^212685671 is an apocalyptic number.

212685671 is a deficient number, since it is larger than the sum of its proper divisors (22798873).

212685671 is a wasteful number, since it uses less digits than its factorization.

212685671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288661.

The product of its digits is 40320, while the sum is 38.

The square root of 212685671 is about 14583.7468093765. The cubic root of 212685671 is about 596.9153455399.

The spelling of 212685671 in words is "two hundred twelve million, six hundred eighty-five thousand, six hundred seventy-one".