7201664 has 16 divisors (see below), whose sum is σ = 14347320. Its totient is φ = 3600768.

The previous prime is 7201651. The next prime is 7201673. The reversal of 7201664 is 4661027.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28004 + ... + 28259.

Almost surely, 2^7201664 is an apocalyptic number.

It is an amenable number.

7201664 is a deficient number, since it is larger than the sum of its proper divisors (7145656).

7201664 is an equidigital number, since it uses as much as digits as its factorization.

7201664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56277 (or 56265 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 7201664 is about 2683.5916231797. The cubic root of 7201664 is about 193.1127514636.

The spelling of 7201664 in words is "seven million, two hundred one thousand, six hundred sixty-four".