206413545 has 64 divisors (see below), whose sum is σ = 369008640. Its totient is φ = 97880832.

The previous prime is 206413513. The next prime is 206413589. The reversal of 206413545 is 545314602.

It is not a de Polignac number, because 206413545 - 2⁵ = 206413513 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 863536 + ... + 863774.

It is an arithmetic number, because the mean of its divisors is an integer number (5765760).

Almost surely, 2^206413545 is an apocalyptic number.

It is an amenable number.

206413545 is a deficient number, since it is larger than the sum of its proper divisors (162595095).

206413545 is a wasteful number, since it uses less digits than its factorization.

206413545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 206413545 is about 14367.0993941018. The cubic root of 206413545 is about 590.9890000558.

The spelling of 206413545 in words is "two hundred six million, four hundred thirteen thousand, five hundred forty-five".