1006457 has 4 divisors (see below), whose sum is σ = 1050240. Its totient is φ = 962676.

The previous prime is 1006441. The next prime is 1006463. The reversal of 1006457 is 7546001.

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.

It is a cyclic number.

It is not a de Polignac number, because 1006457 - 2⁴ = 1006441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 43759 = 1006457 / (1 + 0 + 0 + 6 + 4 + 5 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000457) 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, 21857 + ... + 21902.

It is an arithmetic number, because the mean of its divisors is an integer number (262560).

2^1006457 is an apocalyptic number.

It is an amenable number.

1006457 is a deficient number, since it is larger than the sum of its proper divisors (43783).

1006457 is an equidigital number, since it uses as much as digits as its factorization.

1006457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43782.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 1006457 is about 1003.2233051519. The cubic root of 1006457 is about 100.2147717341.

The spelling of 1006457 in words is "one million, six thousand, four hundred fifty-seven".