1457690 has 16 divisors (see below), whose sum is σ = 2825928. Its totient is φ = 538176.

The previous prime is 1457683. The next prime is 1457741. The reversal of 1457690 is 967541.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 491401 + 966289 = 701^2 + 983^2 .

It is a super-2 number, since 2×1457690² = 4249720272200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5477 + ... + 5736.

2^1457690 is an apocalyptic number.

1457690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1457690 is a deficient number, since it is larger than the sum of its proper divisors (1368238).

1457690 is a wasteful number, since it uses less digits than its factorization.

1457690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11233.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 1457690 is about 1207.3483341604. The cubic root of 1457690 is about 113.3848573874.

The spelling of 1457690 in words is "one million, four hundred fifty-seven thousand, six hundred ninety".