911427664 has 80 divisors (see below), whose sum is σ = 2150005248. Its totient is φ = 365377536.

The previous prime is 911427659. The next prime is 911427667. The reversal of 911427664 is 466724119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (911427667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328009 + ... + 330775.

Almost surely, 2^911427664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 911427664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1075002624).

911427664 is an abundant number, since it is smaller than the sum of its proper divisors (1238577584).

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

911427664 is a wasteful number, since it uses less digits than its factorization.

911427664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2972 (or 2966 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 911427664 is about 30189.8602845392. The cubic root of 911427664 is about 969.5586130842.

The spelling of 911427664 in words is "nine hundred eleven million, four hundred twenty-seven thousand, six hundred sixty-four".