1664498 has 8 divisors (see below), whose sum is σ = 2723760. Its totient is φ = 756580.

The previous prime is 1664461. The next prime is 1664501. The reversal of 1664498 is 8944661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37808 + ... + 37851.

It is an arithmetic number, because the mean of its divisors is an integer number (340470).

2^1664498 is an apocalyptic number.

1664498 is a deficient number, since it is larger than the sum of its proper divisors (1059262).

1664498 is a wasteful number, since it uses less digits than its factorization.

1664498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75672.

The product of its digits is 41472, while the sum is 38.

The square root of 1664498 is about 1290.1542543433. The cubic root of 1664498 is about 118.5116630559.

It can be divided in two parts, 166 and 4498, that added together give a palindrome (4664).

The spelling of 1664498 in words is "one million, six hundred sixty-four thousand, four hundred ninety-eight".