457679681 has 4 divisors (see below), whose sum is σ = 457791792. Its totient is φ = 457567572.

The previous prime is 457679671. The next prime is 457679687. The reversal of 457679681 is 186976754.

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, and also an emirpimes, since its reverse is a distinct semiprime: 186976754 = 2 ⋅93488377.

It is a cyclic number.

It is not a de Polignac number, because 457679681 - 2⁶ = 457679617 is a prime.

It is a super-2 number, since 2×457679681² = 418941380800523522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (457679687) 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, 49691 + ... + 58176.

It is an arithmetic number, because the mean of its divisors is an integer number (114447948).

Almost surely, 2^457679681 is an apocalyptic number.

It is an amenable number.

457679681 is a deficient number, since it is larger than the sum of its proper divisors (112111).

457679681 is a wasteful number, since it uses less digits than its factorization.

457679681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112110.

The product of its digits is 2540160, while the sum is 53.

The square root of 457679681 is about 21393.4494881027. The cubic root of 457679681 is about 770.6441346444.

The spelling of 457679681 in words is "four hundred fifty-seven million, six hundred seventy-nine thousand, six hundred eighty-one".