90586945 has 4 divisors (see below), whose sum is σ = 108704340. Its totient is φ = 72469552.

The previous prime is 90586943. The next prime is 90586967. The reversal of 90586945 is 54968509.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20178064 + 70408881 = 4492^2 + 8391^2 .

It is a cyclic number.

It is not a de Polignac number, because 90586945 - 2¹ = 90586943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90586895 and 90586904.

It is not an unprimeable number, because it can be changed into a prime (90586943) 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, 9058690 + ... + 9058699.

It is an arithmetic number, because the mean of its divisors is an integer number (27176085).

Almost surely, 2^90586945 is an apocalyptic number.

It is an amenable number.

90586945 is a deficient number, since it is larger than the sum of its proper divisors (18117395).

90586945 is a wasteful number, since it uses less digits than its factorization.

90586945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18117394.

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 90586945 is about 9517.7174259378. The cubic root of 90586945 is about 449.1125638121.

The spelling of 90586945 in words is "ninety million, five hundred eighty-six thousand, nine hundred forty-five".