90784077 has 4 divisors (see below), whose sum is σ = 121045440. Its totient is φ = 60522716.

The previous prime is 90784049. The next prime is 90784081. The reversal of 90784077 is 77048709.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90784077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90704077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15130677 + ... + 15130682.

It is an arithmetic number, because the mean of its divisors is an integer number (30261360).

Almost surely, 2^90784077 is an apocalyptic number.

It is an amenable number.

90784077 is a deficient number, since it is larger than the sum of its proper divisors (30261363).

90784077 is a wasteful number, since it uses less digits than its factorization.

90784077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30261362.

The product of its (nonzero) digits is 98784, while the sum is 42.

The square root of 90784077 is about 9528.0678524032. The cubic root of 90784077 is about 449.4381085641.

The spelling of 90784077 in words is "ninety million, seven hundred eighty-four thousand, seventy-seven".