214544657 has 2 divisors, whose sum is σ = 214544658. Its totient is φ = 214544656.

The previous prime is 214544651. The next prime is 214544669. The reversal of 214544657 is 756445412.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185395456 + 29149201 = 13616^2 + 5399^2 .

It is a cyclic number.

It is not a de Polignac number, because 214544657 - 2⁸ = 214544401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 214544657.

It is not a weakly prime, because it can be changed into another prime (214544651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107272328 + 107272329.

It is an arithmetic number, because the mean of its divisors is an integer number (107272329).

Almost surely, 2^214544657 is an apocalyptic number.

It is an amenable number.

214544657 is a deficient number, since it is larger than the sum of its proper divisors (1).

214544657 is an equidigital number, since it uses as much as digits as its factorization.

214544657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 38.

The square root of 214544657 is about 14647.3430013774. The cubic root of 214544657 is about 598.6494223663.

The spelling of 214544657 in words is "two hundred fourteen million, five hundred forty-four thousand, six hundred fifty-seven".