906995840 has 64 divisors (see below), whose sum is σ = 2195856000. Its totient is φ = 358185984.

The previous prime is 906995839. The next prime is 906995897. The reversal of 906995840 is 48599609.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41591 + ... + 59529.

It is an arithmetic number, because the mean of its divisors is an integer number (34310250).

Almost surely, 2^906995840 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 906995840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1097928000).

906995840 is an abundant number, since it is smaller than the sum of its proper divisors (1288860160).

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

906995840 is a wasteful number, since it uses less digits than its factorization.

906995840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18037 (or 18025 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 50.

The square root of 906995840 is about 30116.3716274056. The cubic root of 906995840 is about 967.9845636498.

The spelling of 906995840 in words is "nine hundred six million, nine hundred ninety-five thousand, eight hundred forty".