7620666 has 8 divisors (see below), whose sum is σ = 15241344. Its totient is φ = 2540220.

The previous prime is 7620619. The next prime is 7620671. The reversal of 7620666 is 6660267.

It is a sphenic number, since it is the product of 3 distinct primes.

7620666 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635050 + ... + 635061.

It is an arithmetic number, because the mean of its divisors is an integer number (1905168).

Almost surely, 2^7620666 is an apocalyptic number.

7620666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7620666 is a wasteful number, since it uses less digits than its factorization.

7620666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270116.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 7620666 is about 2760.5553789048. Note that the first 3 decimals coincide. The cubic root of 7620666 is about 196.7875607677.

The spelling of 7620666 in words is "seven million, six hundred twenty thousand, six hundred sixty-six".