1457697 has 4 divisors (see below), whose sum is σ = 1943600. Its totient is φ = 971796.

The previous prime is 1457683. The next prime is 1457741. The reversal of 1457697 is 7967541.

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 not a de Polignac number, because 1457697 - 2⁶ = 1457633 is a prime.

It is a d-powerful number, because it can be written as 1 + 4 + 5⁷ + 7⁵ + 6⁵ + 9⁶ + 7⁷ .

It is a D-number.

It is a Duffinian number.

1457697 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1457647) 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, 242947 + ... + 242952.

It is an arithmetic number, because the mean of its divisors is an integer number (485900).

2^1457697 is an apocalyptic number.

It is an amenable number.

1457697 is a deficient number, since it is larger than the sum of its proper divisors (485903).

1457697 is an equidigital number, since it uses as much as digits as its factorization.

1457697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485902.

The product of its digits is 52920, while the sum is 39.

The square root of 1457697 is about 1207.3512330718. The cubic root of 1457697 is about 113.3850388830.

The spelling of 1457697 in words is "one million, four hundred fifty-seven thousand, six hundred ninety-seven".