906664438 has 8 divisors (see below), whose sum is σ = 1360328760. Its totient is φ = 453221520.

The previous prime is 906664433. The next prime is 906664457. The reversal of 906664438 is 834466609.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (906664433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44703 + ... + 61738.

It is an arithmetic number, because the mean of its divisors is an integer number (170041095).

Almost surely, 2^906664438 is an apocalyptic number.

906664438 is a deficient number, since it is larger than the sum of its proper divisors (453664322).

906664438 is a wasteful number, since it uses less digits than its factorization.

906664438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110702.

The product of its (nonzero) digits is 746496, while the sum is 46.

The square root of 906664438 is about 30110.8691007085. The cubic root of 906664438 is about 967.8666538480.

The spelling of 906664438 in words is "nine hundred six million, six hundred sixty-four thousand, four hundred thirty-eight".