213466545 has 12 divisors (see below), whose sum is σ = 370008756. Its totient is φ = 113848800.

The previous prime is 213466537. The next prime is 213466567. The reversal of 213466545 is 545664312.

213466545 is a `hidden beast` number, since 21 + 34 + 66 + 545 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 109181601 + 104284944 = 10449^2 + 10212^2 .

It is not a de Polignac number, because 213466545 - 2³ = 213466537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2371806 + ... + 2371895.

It is an arithmetic number, because the mean of its divisors is an integer number (30834063).

Almost surely, 2^213466545 is an apocalyptic number.

It is an amenable number.

213466545 is a deficient number, since it is larger than the sum of its proper divisors (156542211).

213466545 is a wasteful number, since it uses less digits than its factorization.

213466545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4743712 (or 4743709 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 213466545 is about 14610.4943448194. The cubic root of 213466545 is about 597.6449768705.

The spelling of 213466545 in words is "two hundred thirteen million, four hundred sixty-six thousand, five hundred forty-five".