90067698 has 96 divisors (see below), whose sum is σ = 232187904. Its totient is φ = 24700896.

The previous prime is 90067697. The next prime is 90067709. The reversal of 90067698 is 89676009.

It is a super-2 number, since 2×90067698² = 16224380446038408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90067697) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 396661 + ... + 396887.

It is an arithmetic number, because the mean of its divisors is an integer number (2418624).

Almost surely, 2^90067698 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90067698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116093952).

90067698 is an abundant number, since it is smaller than the sum of its proper divisors (142120206).

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

90067698 is a wasteful number, since it uses less digits than its factorization.

90067698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 90067698 is about 9490.4003076793. The cubic root of 90067698 is about 448.2528102492.

The spelling of 90067698 in words is "ninety million, sixty-seven thousand, six hundred ninety-eight".