90677905 has 4 divisors (see below), whose sum is σ = 108813492. Its totient is φ = 72542320.

The previous prime is 90677869. The next prime is 90677911. The reversal of 90677905 is 50977609.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50977609 = 31 ⋅1644439.

It can be written as a sum of positive squares in 2 ways, for example, as 40947201 + 49730704 = 6399^2 + 7052^2 .

It is not a de Polignac number, because 90677905 - 2²¹ = 88580753 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9067786 + ... + 9067795.

It is an arithmetic number, because the mean of its divisors is an integer number (27203373).

Almost surely, 2^90677905 is an apocalyptic number.

It is an amenable number.

90677905 is a deficient number, since it is larger than the sum of its proper divisors (18135587).

90677905 is a wasteful number, since it uses less digits than its factorization.

90677905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18135586.

The product of its (nonzero) digits is 119070, while the sum is 43.

The square root of 90677905 is about 9522.4946836425. The cubic root of 90677905 is about 449.2628342264.

The spelling of 90677905 in words is "ninety million, six hundred seventy-seven thousand, nine hundred five".