945723857 has 8 divisors (see below), whose sum is σ = 1019723880. Its totient is φ = 871902720.

The previous prime is 945723799. The next prime is 945723869. The reversal of 945723857 is 758327549.

It can be written as a sum of positive squares in 4 ways, for example, as 146870161 + 798853696 = 12119^2 + 28264^2 .

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

It is not a de Polignac number, because 945723857 - 2²⁶ = 878614993 is a prime.

It is a super-2 number, since 2×945723857² = 1788787227397912898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (945723257) 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, 33632 + ... + 54977.

It is an arithmetic number, because the mean of its divisors is an integer number (127465485).

Almost surely, 2^945723857 is an apocalyptic number.

It is an amenable number.

945723857 is a deficient number, since it is larger than the sum of its proper divisors (74000023).

945723857 is a wasteful number, since it uses less digits than its factorization.

945723857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89443.

The product of its digits is 2116800, while the sum is 50.

The square root of 945723857 is about 30752.6235791355. The cubic root of 945723857 is about 981.5703882883.

The spelling of 945723857 in words is "nine hundred forty-five million, seven hundred twenty-three thousand, eight hundred fifty-seven".