1663004651 has 32 divisors (see below), whose sum is σ = 2207761920. Its totient is φ = 1212710400.

The previous prime is 1663004633. The next prime is 1663004653. The reversal of 1663004651 is 1564003661.

It is not a de Polignac number, because 1663004651 - 2⁶ = 1663004587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1663004653) 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, 233420 + ... + 240438.

It is an arithmetic number, because the mean of its divisors is an integer number (68992560).

Almost surely, 2^1663004651 is an apocalyptic number.

1663004651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1663004651 is a deficient number, since it is larger than the sum of its proper divisors (544757269).

1663004651 is a wasteful number, since it uses less digits than its factorization.

1663004651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7235.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1663004651 is about 40779.9540338142. The cubic root of 1663004651 is about 1184.7621047960.

The spelling of 1663004651 in words is "one billion, six hundred sixty-three million, four thousand, six hundred fifty-one".