457378865 has 8 divisors (see below), whose sum is σ = 567780840. Its totient is φ = 353285632.

The previous prime is 457378847. The next prime is 457378871. The reversal of 457378865 is 568873754.

It can be written as a sum of positive squares in 4 ways, for example, as 42523441 + 414855424 = 6521^2 + 20368^2 .

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 457378865 - 2⁸ = 457378609 is a prime.

It is a super-2 number, since 2×457378865² = 418390852297376450, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1577024 + ... + 1577313.

It is an arithmetic number, because the mean of its divisors is an integer number (70972605).

Almost surely, 2^457378865 is an apocalyptic number.

It is an amenable number.

457378865 is a deficient number, since it is larger than the sum of its proper divisors (110401975).

457378865 is a wasteful number, since it uses less digits than its factorization.

457378865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3154371.

The product of its digits is 5644800, while the sum is 53.

The square root of 457378865 is about 21386.4177692291. The cubic root of 457378865 is about 770.4752589703.

It can be divided in two parts, 4573 and 78865, that added together give a palindrome (83438).

The spelling of 457378865 in words is "four hundred fifty-seven million, three hundred seventy-eight thousand, eight hundred sixty-five".