906641081 has 8 divisors (see below), whose sum is σ = 931958664. Its totient is φ = 881366400.

The previous prime is 906641063. The next prime is 906641101. The reversal of 906641081 is 180146609.

It can be written as a sum of positive squares in 4 ways, for example, as 3097600 + 903543481 = 1760^2 + 30059^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 906641081 - 2¹⁰ = 906640057 is a prime.

It is a super-2 number, since 2×906641081² = 1643996099513697122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (906641041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34781 + ... + 54981.

It is an arithmetic number, because the mean of its divisors is an integer number (116494833).

Almost surely, 2^906641081 is an apocalyptic number.

It is an amenable number.

906641081 is a deficient number, since it is larger than the sum of its proper divisors (25317583).

906641081 is a wasteful number, since it uses less digits than its factorization.

906641081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21451.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 906641081 is about 30110.4812482298. The cubic root of 906641081 is about 967.8583425571.

The spelling of 906641081 in words is "nine hundred six million, six hundred forty-one thousand, eighty-one".