212586997 has 8 divisors (see below), whose sum is σ = 243143552. Its totient is φ = 182077200.

The previous prime is 212586973. The next prime is 212587003. The reversal of 212586997 is 799685212.

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

It is a cyclic number.

It is not a de Polignac number, because 212586997 - 2²³ = 204198389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212586997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212586937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1329 + ... + 20662.

It is an arithmetic number, because the mean of its divisors is an integer number (30392944).

Almost surely, 2^212586997 is an apocalyptic number.

It is an amenable number.

212586997 is a deficient number, since it is larger than the sum of its proper divisors (30556555).

212586997 is a wasteful number, since it uses less digits than its factorization.

212586997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23379.

The product of its digits is 544320, while the sum is 49.

The square root of 212586997 is about 14580.3634042503. The cubic root of 212586997 is about 596.8230197215.

The spelling of 212586997 in words is "two hundred twelve million, five hundred eighty-six thousand, nine hundred ninety-seven".