90517705 has 8 divisors (see below), whose sum is σ = 109341504. Its totient is φ = 71934000.

The previous prime is 90517703. The next prime is 90517711. The reversal of 90517705 is 50771509.

It is a happy number.

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

It is not a de Polignac number, because 90517705 - 2¹ = 90517703 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90517703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59191 + ... + 60700.

It is an arithmetic number, because the mean of its divisors is an integer number (13667688).

Almost surely, 2^90517705 is an apocalyptic number.

It is an amenable number.

90517705 is a deficient number, since it is larger than the sum of its proper divisors (18823799).

90517705 is a wasteful number, since it uses less digits than its factorization.

90517705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120047.

The product of its (nonzero) digits is 11025, while the sum is 34.

The square root of 90517705 is about 9514.0793038528. The cubic root of 90517705 is about 448.9981084670.

The spelling of 90517705 in words is "ninety million, five hundred seventeen thousand, seven hundred five".