90217695 has 32 divisors (see below), whose sum is σ = 150390720. Its totient is φ = 46126080.

The previous prime is 90217693. The next prime is 90217723. The reversal of 90217695 is 59671209.

It is not a de Polignac number, because 90217695 - 2¹ = 90217693 is a prime.

It is a super-2 number, since 2×90217695² = 16278464982226050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90217693) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67635 + ... + 68955.

It is an arithmetic number, because the mean of its divisors is an integer number (4699710).

Almost surely, 2^90217695 is an apocalyptic number.

90217695 is a deficient number, since it is larger than the sum of its proper divisors (60173025).

90217695 is a wasteful number, since it uses less digits than its factorization.

90217695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515.

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 90217695 is about 9498.2995846625. The cubic root of 90217695 is about 448.5015094237.

The spelling of 90217695 in words is "ninety million, two hundred seventeen thousand, six hundred ninety-five".