90391662 has 24 divisors (see below), whose sum is σ = 198609840. Its totient is φ = 29705760.

The previous prime is 90391661. The next prime is 90391699. The reversal of 90391662 is 26619309.

It is a super-3 number, since 3×90391662³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90391661) 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, 34087 + ... + 36642.

It is an arithmetic number, because the mean of its divisors is an integer number (8275410).

Almost surely, 2^90391662 is an apocalyptic number.

90391662 is an abundant number, since it is smaller than the sum of its proper divisors (108218178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90391662 is a wasteful number, since it uses less digits than its factorization.

90391662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70808 (or 70805 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 90391662 is about 9507.4529712221. The cubic root of 90391662 is about 448.7896065062.

It can be divided in two parts, 9039 and 1662, that added together give a palindrome (10701).

The spelling of 90391662 in words is "ninety million, three hundred ninety-one thousand, six hundred sixty-two".