90612765 has 12 divisors (see below), whose sum is σ = 157062204. Its totient is φ = 48326784.

The previous prime is 90612761. The next prime is 90612773. The reversal of 90612765 is 56721609.

It can be written as a sum of positive squares in 2 ways, for example, as 24710841 + 65901924 = 4971^2 + 8118^2 .

It is not a de Polignac number, because 90612765 - 2² = 90612761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90612761) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1006764 + ... + 1006853.

It is an arithmetic number, because the mean of its divisors is an integer number (13088517).

Almost surely, 2^90612765 is an apocalyptic number.

It is an amenable number.

90612765 is a deficient number, since it is larger than the sum of its proper divisors (66449439).

90612765 is a wasteful number, since it uses less digits than its factorization.

90612765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013628 (or 2013625 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 90612765 is about 9519.0737469567. The cubic root of 90612765 is about 449.1552299484.

The spelling of 90612765 in words is "ninety million, six hundred twelve thousand, seven hundred sixty-five".