90247706 has 4 divisors (see below), whose sum is σ = 135371562. Its totient is φ = 45123852.

The previous prime is 90247687. The next prime is 90247741. The reversal of 90247706 is 60774209.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60774209 = 3319 ⋅18311.

It can be written as a sum of positive squares in only one way, i.e., 84916225 + 5331481 = 9215^2 + 2309^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22561925 + ... + 22561928.

Almost surely, 2^90247706 is an apocalyptic number.

90247706 is a deficient number, since it is larger than the sum of its proper divisors (45123856).

90247706 is a wasteful number, since it uses less digits than its factorization.

90247706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45123855.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 90247706 is about 9499.8792623907. The cubic root of 90247706 is about 448.5512353915.

The spelling of 90247706 in words is "ninety million, two hundred forty-seven thousand, seven hundred six".