1663006604 has 24 divisors (see below), whose sum is σ = 3333754368. Its totient is φ = 711058320.

The previous prime is 1663006591. The next prime is 1663006607. The reversal of 1663006604 is 4066003661.

It is a super-2 number, since 2×1663006604² = 5531181929895225632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1663006607) 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, 56834 + ... + 80969.

It is an arithmetic number, because the mean of its divisors is an integer number (138906432).

Almost surely, 2^1663006604 is an apocalyptic number.

1663006604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1663006604 is an abundant number, since it is smaller than the sum of its proper divisors (1670747764).

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

1663006604 is a wasteful number, since it uses less digits than its factorization.

1663006604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138245 (or 138243 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 1663006604 is about 40779.9779793957. The cubic root of 1663006604 is about 1184.7625685829.

The spelling of 1663006604 in words is "one billion, six hundred sixty-three million, six thousand, six hundred four".