90877505 has 16 divisors (see below), whose sum is σ = 110510400. Its totient is φ = 71737920.

The previous prime is 90877499. The next prime is 90877519. The reversal of 90877505 is 50577809.

It is a happy number.

It is not a de Polignac number, because 90877505 - 2⁶ = 90877441 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 158870 + ... + 159440.

It is an arithmetic number, because the mean of its divisors is an integer number (6906900).

Almost surely, 2^90877505 is an apocalyptic number.

It is an amenable number.

90877505 is a deficient number, since it is larger than the sum of its proper divisors (19632895).

90877505 is a wasteful number, since it uses less digits than its factorization.

90877505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944.

The product of its (nonzero) digits is 88200, while the sum is 41.

The square root of 90877505 is about 9532.9693695092. The cubic root of 90877505 is about 449.5922314342.

The spelling of 90877505 in words is "ninety million, eight hundred seventy-seven thousand, five hundred five".