90015761 has 8 divisors (see below), whose sum is σ = 98269248. Its totient is φ = 81774000.

The previous prime is 90015743. The next prime is 90015803. The reversal of 90015761 is 16751009.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90015761 - 2¹⁸ = 89753617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90015701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23651 + ... + 27191.

It is an arithmetic number, because the mean of its divisors is an integer number (12283656).

Almost surely, 2^90015761 is an apocalyptic number.

It is an amenable number.

90015761 is a deficient number, since it is larger than the sum of its proper divisors (8253487).

90015761 is a wasteful number, since it uses less digits than its factorization.

90015761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5863.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 90015761 is about 9487.6636217775. The cubic root of 90015761 is about 448.1666329141.

It can be divided in two parts, 900 and 15761, that added together give a palindrome (16661).

The spelling of 90015761 in words is "ninety million, fifteen thousand, seven hundred sixty-one".