905670913 has 4 divisors (see below), whose sum is σ = 1035052480. Its totient is φ = 776289348.

The previous prime is 905670881. The next prime is 905670917. The reversal of 905670913 is 319076509.

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 905670913 - 2⁵ = 905670881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (905670917) 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, 64690773 + ... + 64690786.

It is an arithmetic number, because the mean of its divisors is an integer number (258763120).

Almost surely, 2^905670913 is an apocalyptic number.

It is an amenable number.

905670913 is a deficient number, since it is larger than the sum of its proper divisors (129381567).

905670913 is a wasteful number, since it uses less digits than its factorization.

905670913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129381566.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 905670913 is about 30094.3667984558. The cubic root of 905670913 is about 967.5129944594.

The spelling of 905670913 in words is "nine hundred five million, six hundred seventy thousand, nine hundred thirteen".