90066031 has 8 divisors (see below), whose sum is σ = 98472528. Its totient is φ = 81696000.

The previous prime is 90066019. The next prime is 90066047. The reversal of 90066031 is 13066009.

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

It is a cyclic number.

It is not a de Polignac number, because 90066031 - 2⁷ = 90065903 is a prime.

It is a super-2 number, since 2×90066031² = 16223779880185922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90065987 and 90066005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90060031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3810 + ... + 13951.

It is an arithmetic number, because the mean of its divisors is an integer number (12309066).

Almost surely, 2^90066031 is an apocalyptic number.

90066031 is a deficient number, since it is larger than the sum of its proper divisors (8406497).

90066031 is a wasteful number, since it uses less digits than its factorization.

90066031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18233.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 90066031 is about 9490.3124816836. The cubic root of 90066031 is about 448.2500447662.

The spelling of 90066031 in words is "ninety million, sixty-six thousand, thirty-one".