90077216 has 12 divisors (see below), whose sum is σ = 177339582. Its totient is φ = 45038592.

The previous prime is 90077191. The next prime is 90077231. The reversal of 90077216 is 61277009.

It can be written as a sum of positive squares in only one way, i.e., 77088400 + 12988816 = 8780^2 + 3604^2 .

It is a super-2 number, since 2×90077216² = 16227809684621312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 2814913 = 90077216 / (9 + 0 + 0 + 7 + 7 + 2 + 1 + 6).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1407425 + ... + 1407488.

Almost surely, 2^90077216 is an apocalyptic number.

It is an amenable number.

90077216 is a deficient number, since it is larger than the sum of its proper divisors (87262366).

90077216 is a wasteful number, since it uses less digits than its factorization.

90077216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814923 (or 2814915 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 90077216 is about 9490.9017485168. The cubic root of 90077216 is about 448.2685995575.

The spelling of 90077216 in words is "ninety million, seventy-seven thousand, two hundred sixteen".