1670498 has 4 divisors (see below), whose sum is σ = 2505750. Its totient is φ = 835248.

The previous prime is 1670491. The next prime is 1670503. The reversal of 1670498 is 8940761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8940761 = 307 ⋅29123.

It can be written as a sum of positive squares in only one way, i.e., 1570009 + 100489 = 1253^2 + 317^2 .

It is not an unprimeable number, because it can be changed into a prime (1670491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 417623 + ... + 417626.

2^1670498 is an apocalyptic number.

1670498 is a deficient number, since it is larger than the sum of its proper divisors (835252).

1670498 is an equidigital number, since it uses as much as digits as its factorization.

1670498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835251.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1670498 is about 1292.4774659544. The cubic root of 1670498 is about 118.6538915816.

The spelling of 1670498 in words is "one million, six hundred seventy thousand, four hundred ninety-eight".