85407563 has 4 divisors (see below), whose sum is σ = 85973328. Its totient is φ = 84841800.

The previous prime is 85407559. The next prime is 85407571. The reversal of 85407563 is 36570458.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36570458 = 2 ⋅18285229.

It is a cyclic number.

It is not a de Polignac number, because 85407563 - 2² = 85407559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85407583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282656 + ... + 282957.

It is an arithmetic number, because the mean of its divisors is an integer number (21493332).

Almost surely, 2^85407563 is an apocalyptic number.

85407563 is a deficient number, since it is larger than the sum of its proper divisors (565765).

85407563 is a wasteful number, since it uses less digits than its factorization.

85407563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565764.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 85407563 is about 9241.6212322298. The cubic root of 85407563 is about 440.3845862714.

The spelling of 85407563 in words is "eighty-five million, four hundred seven thousand, five hundred sixty-three".