461665257 has 8 divisors (see below), whose sum is σ = 618471840. Its totient is φ = 306317760.

The previous prime is 461665241. The next prime is 461665271. The reversal of 461665257 is 752566164.

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

It is not a de Polignac number, because 461665257 - 2⁴ = 461665241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (461665357) 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, 364032 + ... + 365297.

It is an arithmetic number, because the mean of its divisors is an integer number (77308980).

Almost surely, 2^461665257 is an apocalyptic number.

It is an amenable number.

461665257 is a deficient number, since it is larger than the sum of its proper divisors (156806583).

461665257 is a wasteful number, since it uses less digits than its factorization.

461665257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729543.

The product of its digits is 302400, while the sum is 42.

The square root of 461665257 is about 21486.3970223023. The cubic root of 461665257 is about 772.8746524246.

The spelling of 461665257 in words is "four hundred sixty-one million, six hundred sixty-five thousand, two hundred fifty-seven".