857490623 has 16 divisors (see below), whose sum is σ = 978566400. Its totient is φ = 743772480.

The previous prime is 857490611. The next prime is 857490671. The reversal of 857490623 is 326094758.

It is not a de Polignac number, because 857490623 - 2⁶ = 857490559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857490223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101963 + ... + 110051.

It is an arithmetic number, because the mean of its divisors is an integer number (61160400).

Almost surely, 2^857490623 is an apocalyptic number.

857490623 is a deficient number, since it is larger than the sum of its proper divisors (121075777).

857490623 is a wasteful number, since it uses less digits than its factorization.

857490623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8542.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 857490623 is about 29282.9408188454. The cubic root of 857490623 is about 950.0427027896.

The spelling of 857490623 in words is "eight hundred fifty-seven million, four hundred ninety thousand, six hundred twenty-three".