1663464 has 32 divisors (see below), whose sum is σ = 4537440. Its totient is φ = 504000.

The previous prime is 1663463. The next prime is 1663477. The reversal of 1663464 is 4643661.

It is a super-2 number, since 2×1663464² = 5534224958592, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1663463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2887 + ... + 3414.

It is an arithmetic number, because the mean of its divisors is an integer number (141795).

2^1663464 is an apocalyptic number.

It is an amenable number.

1663464 is an abundant number, since it is smaller than the sum of its proper divisors (2873976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1663464 is a wasteful number, since it uses less digits than its factorization.

1663464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6321 (or 6317 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

The square root of 1663464 is about 1289.7534648141. The cubic root of 1663464 is about 118.4871178291.

The spelling of 1663464 in words is "one million, six hundred sixty-three thousand, four hundred sixty-four".