906640269 has 4 divisors (see below), whose sum is σ = 1208853696. Its totient is φ = 604426844.

The previous prime is 906640249. The next prime is 906640307. The reversal of 906640269 is 962046609.

906640269 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 906640269 - 2⁵ = 906640237 is a prime.

It is a super-2 number, since 2×906640269² = 1643993154744784722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 906640269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (906640249) 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, 151106709 + ... + 151106714.

It is an arithmetic number, because the mean of its divisors is an integer number (302213424).

Almost surely, 2^906640269 is an apocalyptic number.

It is an amenable number.

906640269 is a deficient number, since it is larger than the sum of its proper divisors (302213427).

906640269 is a wasteful number, since it uses less digits than its factorization.

906640269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302213426.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 906640269 is about 30110.4677645499. The cubic root of 906640269 is about 967.8580536147.

The spelling of 906640269 in words is "nine hundred six million, six hundred forty thousand, two hundred sixty-nine".