7620664 has 8 divisors (see below), whose sum is σ = 14288760. Its totient is φ = 3810328.

The previous prime is 7620619. The next prime is 7620671. The reversal of 7620664 is 4660267.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 476284 + ... + 476299.

It is an arithmetic number, because the mean of its divisors is an integer number (1786095).

Almost surely, 2^7620664 is an apocalyptic number.

It is an amenable number.

7620664 is a deficient number, since it is larger than the sum of its proper divisors (6668096).

7620664 is a wasteful number, since it uses less digits than its factorization.

7620664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952589 (or 952585 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 7620664 is about 2760.5550166588. Note that the first 3 decimals coincide. The cubic root of 7620664 is about 196.7875435525.

The spelling of 7620664 in words is "seven million, six hundred twenty thousand, six hundred sixty-four".