212457065 has 8 divisors (see below), whose sum is σ = 255028608. Its totient is φ = 169912240.

The previous prime is 212457029. The next prime is 212457073. The reversal of 212457065 is 560754212.

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

It is not a de Polignac number, because 212457065 - 2⁸ = 212456809 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22094 + ... + 30216.

It is an arithmetic number, because the mean of its divisors is an integer number (31878576).

Almost surely, 2^212457065 is an apocalyptic number.

It is an amenable number.

212457065 is a deficient number, since it is larger than the sum of its proper divisors (42571543).

212457065 is an equidigital number, since it uses as much as digits as its factorization.

212457065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13359.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 212457065 is about 14575.9070043685. The cubic root of 212457065 is about 596.7014032952.

The spelling of 212457065 in words is "two hundred twelve million, four hundred fifty-seven thousand, sixty-five".