10664388 has 72 divisors (see below), whose sum is σ = 31187520. Its totient is φ = 3009600.

The previous prime is 10664371. The next prime is 10664449. The reversal of 10664388 is 88346601.

It is a happy number.

10664388 is a `hidden beast` number, since 1 + 0 + 6 + 643 + 8 + 8 = 666.

It is a super-2 number, since 2×10664388² = 227458342829088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25243 + ... + 25661.

It is an arithmetic number, because the mean of its divisors is an integer number (433160).

Almost surely, 2^10664388 is an apocalyptic number.

10664388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10664388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15593760).

10664388 is an abundant number, since it is smaller than the sum of its proper divisors (20523132).

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

10664388 is a wasteful number, since it uses less digits than its factorization.

10664388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537 (or 532 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 10664388 is about 3265.6374569140. The cubic root of 10664388 is about 220.1128071609.

The spelling of 10664388 in words is "ten million, six hundred sixty-four thousand, three hundred eighty-eight".