1489657 has 16 divisors (see below), whose sum is σ = 1744960. Its totient is φ = 1259712.

The previous prime is 1489637. The next prime is 1489661. The reversal of 1489657 is 7569841.

It is a 9-Lehmer number, since φ(1489657) divides (1489657-1)⁹.

It is a cyclic number.

It is not a de Polignac number, because 1489657 - 2⁷ = 1489529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1489627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9058 + ... + 9220.

It is an arithmetic number, because the mean of its divisors is an integer number (109060).

2^1489657 is an apocalyptic number.

It is an amenable number.

1489657 is a deficient number, since it is larger than the sum of its proper divisors (255303).

1489657 is a wasteful number, since it uses less digits than its factorization.

1489657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232.

The product of its digits is 60480, while the sum is 40.

The square root of 1489657 is about 1220.5150552123. The cubic root of 1489657 is about 114.2077109839.

The spelling of 1489657 in words is "one million, four hundred eighty-nine thousand, six hundred fifty-seven".