857464081 has 8 divisors (see below), whose sum is σ = 903109824. Its totient is φ = 812515440.

The previous prime is 857464079. The next prime is 857464103. The reversal of 857464081 is 180464758.

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 857464081 - 2¹ = 857464079 is a prime.

It is a super-2 number, since 2×857464081² = 1470489300410349122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (857464021) 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, 171750 + ... + 176671.

It is an arithmetic number, because the mean of its divisors is an integer number (112888728).

Almost surely, 2^857464081 is an apocalyptic number.

It is an amenable number.

857464081 is a deficient number, since it is larger than the sum of its proper divisors (45645743).

857464081 is a wasteful number, since it uses less digits than its factorization.

857464081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348551.

The product of its (nonzero) digits is 215040, while the sum is 43.

The square root of 857464081 is about 29282.4876163211. The cubic root of 857464081 is about 950.0329004303.

The spelling of 857464081 in words is "eight hundred fifty-seven million, four hundred sixty-four thousand, eighty-one".