8331690 has 64 divisors (see below), whose sum is σ = 21565440. Its totient is φ = 2053440.

The previous prime is 8331689. The next prime is 8331691. The reversal of 8331690 is 961338.

8331690 = T₁₄₀ + T₁₄₁ + ... + T₃₇₄.

It is an interprime number because it is at equal distance from previous prime (8331689) and next prime (8331691).

It is a super-2 number, since 2×8331690² = 138834116512200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (8331691) 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 31 ways as a sum of consecutive naturals, for example, 26635 + ... + 26945.

It is an arithmetic number, because the mean of its divisors is an integer number (336960).

Almost surely, 2^8331690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8331690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10782720).

8331690 is an abundant number, since it is smaller than the sum of its proper divisors (13233750).

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

8331690 is a wasteful number, since it uses less digits than its factorization.

8331690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 8331690 is about 2886.4666982316. The cubic root of 8331690 is about 202.7267388626.

The spelling of 8331690 in words is "eight million, three hundred thirty-one thousand, six hundred ninety".