90549667 has 16 divisors (see below), whose sum is σ = 106589952. Its totient is φ = 76124160.

The previous prime is 90549661. The next prime is 90549673. The reversal of 90549667 is 76694509.

It is an interprime number because it is at equal distance from previous prime (90549661) and next prime (90549673).

It is a cyclic number.

It is not a de Polignac number, because 90549667 - 2¹⁹ = 90025379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90549661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243 + ... + 13459.

It is an arithmetic number, because the mean of its divisors is an integer number (6661872).

Almost surely, 2^90549667 is an apocalyptic number.

90549667 is a deficient number, since it is larger than the sum of its proper divisors (16040285).

90549667 is a wasteful number, since it uses less digits than its factorization.

90549667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13278.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 90549667 is about 9515.7588767265. The cubic root of 90549667 is about 449.0509496534.

It can be divided in two parts, 9054 and 9667, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 90549667 in words is "ninety million, five hundred forty-nine thousand, six hundred sixty-seven".