90067867 has 4 divisors (see below), whose sum is σ = 90444960. Its totient is φ = 89690776.

The previous prime is 90067849. The next prime is 90067877. The reversal of 90067867 is 76876009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76876009 = 7 ⋅10982287.

It is a cyclic number.

It is not a de Polignac number, because 90067867 - 2¹⁹ = 89543579 is a prime.

It is a super-2 number, since 2×90067867² = 16224441331859378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90067877) 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, 188188 + ... + 188665.

It is an arithmetic number, because the mean of its divisors is an integer number (22611240).

Almost surely, 2^90067867 is an apocalyptic number.

90067867 is a deficient number, since it is larger than the sum of its proper divisors (377093).

90067867 is a wasteful number, since it uses less digits than its factorization.

90067867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377092.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 90067867 is about 9490.4092114092. The cubic root of 90067867 is about 448.2530906111.

The spelling of 90067867 in words is "ninety million, sixty-seven thousand, eight hundred sixty-seven".