90064594 has 4 divisors (see below), whose sum is σ = 135096894. Its totient is φ = 45032296.

The previous prime is 90064591. The next prime is 90064627. The reversal of 90064594 is 49546009.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 86211225 + 3853369 = 9285^2 + 1963^2 .

It is a super-2 number, since 2×90064594² = 16223262184769672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90064591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22516147 + ... + 22516150.

Almost surely, 2^90064594 is an apocalyptic number.

90064594 is a deficient number, since it is larger than the sum of its proper divisors (45032300).

90064594 is a wasteful number, since it uses less digits than its factorization.

90064594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45032299.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 90064594 is about 9490.2367725995. The cubic root of 90064594 is about 448.2476608162.

The spelling of 90064594 in words is "ninety million, sixty-four thousand, five hundred ninety-four".