1670487 has 32 divisors (see below), whose sum is σ = 2849280. Its totient is φ = 846720.

The previous prime is 1670477. The next prime is 1670489. The reversal of 1670487 is 7840761.

It is not a de Polignac number, because 1670487 - 2⁷ = 1670359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670489) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7812 + ... + 8022.

It is an arithmetic number, because the mean of its divisors is an integer number (89040).

2^1670487 is an apocalyptic number.

1670487 is a deficient number, since it is larger than the sum of its proper divisors (1178793).

1670487 is a wasteful number, since it uses less digits than its factorization.

With its successor (1670488) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (263).

1670487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 1670487 is about 1292.4732105541. The cubic root of 1670487 is about 118.6536311411.

The spelling of 1670487 in words is "one million, six hundred seventy thousand, four hundred eighty-seven".